I used these shell commands:
../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")
and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 7061 files FOO.
I then removed trailing white space from math/tgmath.h,
support/tst-support-open-dev-null-range.c, and
sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following
obscure pre-commit check failure diagnostics from Savannah. I don't
know why I run into these diagnostics whereas others evidently do not.
remote: *** 912-#endif
remote: *** 913:
remote: *** 914-
remote: *** error: lines with trailing whitespace found
...
remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
I used these shell commands:
../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")
and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 6694 files FOO.
I then removed trailing white space from benchtests/bench-pthread-locks.c
and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this
diagnostic from Savannah:
remote: *** pre-commit check failed ...
remote: *** error: lines with trailing whitespace found
remote: error: hook declined to update refs/heads/master
so interfaces needing it can get it.
* stdlib/errno.h (error_t): Move definition to...
* bits/types/error_t.h: ... new header.
* stdlib/Makefile (headers): Add bits/types/error_t.h.
* sysdeps/mach/hurd/bits/errno.h (error_t): Move definition to...
* sysdeps/mach/hurd/bits/types/error_t.h: ... new header.
* sysdeps/mach/hurd/errnos.awk (error_t): Likewise.
* hurd/hurd.h: Include <bits/types/error_t.h>
* hurd/hurd/fd.h: Include <bits/types/error_t.h>
* hurd/hurd/id.h: Include <errno.h> and <bits/types/error_t.h>
* hurd/hurd/lookup.h: Include <errno.h> and <bits/types/error_t.h>
* hurd/hurd/resource.h: Include <bits/types/error_t.h>
* hurd/hurd/signal.h: Include <bits/types/error_t.h>
* hurd/hurd/sigpreempt.h: Include <bits/types/error_t.h>
This is fairly complicated, not because the users of __need_Emath and
__need_error_t have complicated requirements, but because the core
changes had a lot of fallout.
__need_error_t exists for gnulib compatibility in argz.h and argp.h.
error_t itself is a Hurdism, an enum containing all the E-constants,
so you can do 'p (error_t) errno' in gdb and get a symbolic value.
argz.h and argp.h use it for function return values, and they want to
fall back to 'int' when that's not available. There is no reason why
these nonstandard headers cannot just go ahead and include all of
errno.h; so we do that.
__need_Emath is defined only by .S files; what they _really_ need is
for errno.h to avoid declaring anything other than the E-constants
(e.g. 'extern int __errno_location(void);' is a syntax error in
assembly language). This is replaced with a check for __ASSEMBLER__ in
errno.h, plus a carefully documented requirement for bits/errno.h not
to define anything other than macros. That in turn has the
consequence that bits/errno.h must not define errno - fortunately, all
live ports use the same definition of errno, so I've moved it to
errno.h. The Hurd bits/errno.h must also take care not to define
error_t when __ASSEMBLER__ is defined, which involves repeating all of
the definitions twice, but it's a generated file so that's okay.
* stdlib/errno.h: Remove __need_Emath and __need_error_t logic.
Reorganize file. Declare errno here. When __ASSEMBLER__ is
defined, don't declare anything other than the E-constants.
* include/errno.h: Change conditional for exposing internal
declarations to (not _ISOMAC and not __ASSEMBLER__).
* bits/errno.h: Remove logic for __need_Emath. Document
requirements for a port-specific bits/errno.h.
* sysdeps/unix/sysv/linux/bits/errno.h
* sysdeps/unix/sysv/linux/alpha/bits/errno.h
* sysdeps/unix/sysv/linux/hppa/bits/errno.h
* sysdeps/unix/sysv/linux/mips/bits/errno.h
* sysdeps/unix/sysv/linux/sparc/bits/errno.h:
Add multiple-include guard and check against improper inclusion.
Remove __need_Emath logic. Don't declare errno here. Ensure all
constants are defined as simple integer literals. Consistent
formatting.
* sysdeps/mach/hurd/errnos.awk: Likewise. Only define error_t and
enum __error_t_codes if __ASSEMBLER__ is not defined.
* sysdeps/mach/hurd/bits/errno.h: Regenerate.
* argp/argp.h, string/argz.h: Don't define __need_error_t before
including errno.h.
* sysdeps/i386/i686/fpu/multiarch/s_cosf-sse2.S
* sysdeps/i386/i686/fpu/multiarch/s_sincosf-sse2.S
* sysdeps/i386/i686/fpu/multiarch/s_sinf-sse2.S
* sysdeps/x86_64/fpu/s_cosf.S
* sysdeps/x86_64/fpu/s_sincosf.S
* sysdeps/x86_64/fpu/s_sinf.S:
Just include errno.h; don't define __need_Emath or include
bits/errno.h directly.
errno.texi documents error macros, their values, and error strings in
Texinfo @comments, some of which are also used for @standards. The
purpose of this commit is to separate the standards from the error
strings so that both the @standards conversion script picks up clean
@standards and the errno documentation framework is improved.
The error names, values, and messages are consolidated in a new custom
macro, @errno. It is not clear that scripts within the sources rely
on the special Texinfo @comment-based format to generate files used
throughout the library, so the definition of @errno in macros.texi now
provides a comment indicating the dependency. The dependent scripts
are updated to use @errno, which also simplifies them a bit. The
files those scripts generate were verified to be unchanged.
The @errno macro is not visibly rendered in any way at this time, but
it does use an @cindex command to add the error string to the Concept
Index, to facilitate searching on error messages.
* manual/errno.texi: Convert @comment-based errno
documentation to @errno.
* manual/macros.texi (@errno): New macro. Consolidate errors,
their values, and messages, adding the error string to the
Concept Index. Provide a warning in the comment about
external (to the manual) dependencies.
* sysdeps/gnu/errlist.awk: Use @errno instead of @comments.
* sysdeps/mach/hurd/errnos.awk: Likewise.
2001-07-06 Paul Eggert <eggert@twinsun.com>
* manual/argp.texi: Remove ignored LGPL copyright notice; it's
not appropriate for documentation anyway.
* manual/libc-texinfo.sh: "Library General Public License" ->
"Lesser General Public License".
2001-07-06 Andreas Jaeger <aj@suse.de>
* All files under GPL/LGPL version 2: Place under LGPL version
2.1.
* sysdeps/mach/hurd/errnos.awk: Rediddle to collect lines and print
them all at the end, eliding the final comma.
* sysdeps/mach/hurd/bits/errno.h: Regenerated.
1997-07-06 23:36 Ulrich Drepper <drepper@cygnus.com>
* isomac.c (get_null_defines): Put NULL at end of list.
* hurd/Makefile: Remove special handling of sunrpc code.
* sysdeps/mach/hurd/Makefile: Likewise.
Compile CThreads code.
* sunrpc/rpc_main.c: Don't use MAXPATHLEN.
* sysdeps/mach/bits/libc-lock.h: Add definitions for key handling
functions.
* sysdeps/stub/bits/libc-lock.h: Likewise.
* sysdeps/mach/hurd/net/ethernet.h: New file.
* sysdeps/mach/hurd/net/if.h: New file.
* sysdeps/mach/hurd/net/if_arp.h: New file.
* sysdeps/mach/hurd/net/if_ether.h: New file.
* sysdeps/mach/hurd/net/if_ppp.h: New file.
* sysdeps/mach/hurd/net/route.h: New file.
Patches by Fila Kolodny <fila@ibi.com>.
* math/fenv-test.c: Add more tests.
Patch by Andreas Jaeger <aj@arthur.rhein-neckar.de>.
* sysdeps/wordsize-32/inttypes.h: Correct values for INTFAST_MIN,
INTFAST_MAX, and UINTFAST_MAX.
* sysdeps/wordsize-64/inttypes.h: Likewise.
Correct intmax_t definition.
1997-07-04 15:33 H.J. Lu <hjl@gnu.ai.mit.edu>
* elf/rtld.c (dl_main): Add '\n' to _dl_sysdep_fatal ().
1997-07-01 09:18 H.J. Lu <hjl@gnu.ai.mit.edu>
* libc.map: Add missing symbol.
1997-07-04 18:04 H.J. Lu <hjl@gnu.ai.mit.edu>
* stdlib/tst-strtol.c: Don't assume cpp takes ~0UL as long
in cc1. Cpp in gcc doesn't do it.
1997-07-01 21:15 Andreas Jaeger <aj@arthur.rhein-neckar.de>
* libio/libioP.h: Remove second definition of _IO_file_attach.
* sysdeps/i386/fpu/fraiseexcpt.c (feraiseexcept): Correct comments.
* sysdeps/sparc64/elf/start.S (_start): Update and reformat
copyright.
* manual/summary.awk: Likewise.
* misc/bits/stab.def: Likewise.
* posix/glob/Makefile.ami: Likewise.
* posix/glob/Makefile.in: Likewise.
* posix/glob/SMakefile: Likewise.
* sysdeps/gnu/errlist.awk: Likewise.
* sysdeps/mach/hurd/errnos.awk: Likewise.
* sysdeps/standalone/i386/force_cpu386/target.ld: Likewise.
* sysdeps/standalone/m68k/m68020/mvme136/mvme136.ld: Likewise.
* sysdeps/unix/snarf-ioctls: Likewise.
* sysdeps/vax/setjmp.c: Likewise.
1997-07-05 11:56 Ulrich Drepper <drepper@cygnus.com>
* login/login.c (tty_name): Use newly allocated buffer.
Patch by Jaakko Hyvtti <jaakko.hyvatti@iki.fi>.
* time/asctime.c: Never translate week and month name according
to LC_TIME. Patch by Paul Eggert <eggert@twinsun.com>.
1997-07-03 22:50 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* locale/setlocale.c (setname): Do nothing when reusing the same
name.
1997-07-03 20:18 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* libc.map: Add global variables of malloc.
1997-07-03 13:24 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* elf/dl-version.c (find_needed): Look for needed objects also in
the dependency list of the current object. Added new parameter to
find its link map, caller changed.
1997-07-03 12:33 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/m68k/fpu/fraiseexcpt.c: Correct the FE_INEXACT and
FE_UNDERFLOW cases.
1997-07-01 13:36 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* elf/link.h: Remove final comma from enumerator list, forbidden
by ISO C. Use __inline instead of inline.
1997-07-01 16:40 Thomas Bushnell, n/BSG <thomas@gnu.ai.mit.edu>
* hurd/hurdsig.c: Include <hurd/id.h>.
(reauth_proc): Call proc_setowner appropriately too.
1997-07-01 09:18 H.J. Lu <hjl@gnu.ai.mit.edu>
* libc.map: Add missing symbol.
1997-06-30 12:12 Fila Kolodny <fila@ibi.com>
* sysdeps/mach/hurd/fchdir.c: Make fchdir a weak alias of __fchdir.
* sysdeps/mach/hurd/getpeername.c (getpeername): Remove spurious
declaration of addr.
1997-06-29 17:56 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* manual/argp.texi (Argp Option Vectors): Fix use of @math to make
it work in TeX.
1997-06-27 21:25 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* Makeconfig (+includes): Add include directory to include path.
* configure.in (sysnames): Don't add it here.
* Makefile (subdir-dirs): Define and add it to vpath for headers.
* Make-dist (all-headers): Look in include directory for
indirection headers. Filter out header names pointing outside the
source directory.
* Makefile (distribute): Remove ansidecl.h, add libc.map.
* Make-dist (+tsrcs): Add version scripts for extra libraries.
* Makerules (distinfo-vars): Add %-map for extra libraries.
* sysdeps/unix/sysv/linux/alpha/Dist: Rename sys/kernel_termios.h
to kernel_termios.h.
* sysdeps/unix/sysv/linux/powerpc/Dist: Remove ioctl-types.h,
termbits.h and sys/kernel_termios.h.
* sysdeps/mips/mips64/Dist: New file.
* sysdeps/unix/sysv/linux/Dist: Add stdio_lim.h.in.
1997-06-29 23:03 Andreas Jaeger <aj@arthur.rhein-neckar.de>
* math/test-fenv.c (feenv_nomask_test): New test for non masked
exceptions.
(feenv_mask_test): New test for masked exceptions
(feenv_tests): New function calls feenv_nomask_test and
feenv_mask_test.
(main): Call new tests.
(initial_tests): New test for initilisation.
* sysdeps/mach/hurd/errnos.awk: Move EWOULDBLOCK check before errno==0
check. mib's clueless hacking broke it.
Thu Jul 18 04:27:21 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* Makerules ($(libdir)/libc.so): Add missing / after $(cryptobjdir).
Wed Jul 17 10:54:20 1996 David Mosberger-Tang <davidm@azstarnet.com>
* sysdeps/unix/sysv/linux/alpha/start.S: Move to ...
* sysdeps/alpha/elf/start.S: here.
* misc/sys/ustat.h: New file.
* misc/ustat.h: Ditto.
* sysdeps/generic/ustatbits.h: Ditto.
* libc-orig/sysdeps/stub/ustat.c: Ditto.
* sysdeps/unix/sysv/linux/ustatbits.h: Ditto.
* misc/Makefile (headers): Mention ustat.h, sys/ustat.h, and
ustatbits.h.
(routines): Mention ustat.
* sysdeps/unix/sysv/linux/syscalls.list: Mention klogctl in
alphabetically correct place. Mention ustat.
* sysdeps/unix/alpha/sysdep.S: Make errno a bss symbol, not a
common symbol (makes errno accessible from gdb).
* login/pututline_r.c (pututline_r): Test ut_id in repositioning
test, not ut_type.
* login/logwtmp.c (logwtmp): Reimplemented. Must ensure that a
record always gets appended at end of file (wtmp is a log file,
after all). Set ut_type to DEAD_PROCESS if name is empty.
* login/getutid_r.c (getutid_r): Handle search for UT_TYPE in
separate loop from search for UT_ID. Fix code so it is in
sync with Unix man page.
* login/getutline_r.c (getutline_r): Stop searching only if
ut_line matches and type is either USER_PROCESS or LOGIN_PROCESS.
Tue Jul 16 15:06:18 1996 David Mosberger-Tang <davidm@azstarnet.com>
* sysdeps/unix/sysv/linux/netinet/in.h: Base on <linux/in.h> to
avoid duplicate declarations.
Sun Jul 14 19:08:55 1996 David Mosberger-Tang <davidm@azstarnet.com>
* manual/maint.texi (Supported Configurations): Add alpha-gnu-linux
and alpha-gnu-linuxecoff targets.
Fri Jul 12 16:58:44 1996 David Mosberger-Tang <davidm@azstarnet.com>
* sysdeps/unix/sysv/linux/netinet/in.h: Declare bindresvport().
Sat Jun 22 23:30:07 1996 David Mosberger-Tang <davidm@azstarnet.com>
* resolv/res_send.c (res_send): Declare FROMLEN as size_t instead
of int.
* resolv/res_comp.c (res_hnok): Use empty statement in place
of NULL (which generates a "useless expression" warning in
gcc).
Tue Jul 9 00:14:52 1996 Michael I. Bushnell p/BSG <mib@gnu.ai.mit.edu>
* sysdeps/mach/hurd/ioctls.h (MDMBUF, ECHO, TOSTOP, FLUSHO,
PENDIN, NOFLSH): Undefine these at start if they are already
defined to avoid collision with termbits.h.
* sysdeps/generic/termbits.h (ECHO, TOSTOP, NOFLSH): Likewise.
(MDMBUF, FLUSHO, PENDIN) [__USE_BSD]: Likewise.
Mon Jul 8 13:10:50 1996 Michael I. Bushnell p/BSG <mib@gnu.ai.mit.edu>
* sysdeps/mach/hurd/errnos.awk: Skip entries where the
error is 0. The "placeholder" entries recently added to
errno.texi convert to zero since `???/' is at the front of them.
* sysdeps/gnu/errlist.awk (errnoh): Likewise.
* sysdeps/stub/setdomain.c (setdomainname): Declare NAME parm
__const to conform with unistd.h.
* posix/regex.c (re_comp, re_exec): Use weak_function as
keyword in function defns instead of weak_symbol (NAME) after
the defn.
* stdlib/stdlib.h (random): Declare return type to be int32_t.
* mach/Machrules (%.udeps rule): Write deps for %_server.[ch] too.
(%_server.[ch] rule): Don't depend on %.defs; use #include to get
installed .defs file.
* stdio-common/vfprintf.c (flockfile, funlockfile): Define to
nothing for stdio. Fix fUNlockfile -> funlockfile for libio.
* stdio-common/vfscanf.c: Likewise.
Sat May 11 13:43:41 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* hurd/hurdfault.c: Include faultexc_server.h instead of faultexc.h.
* mach/Machrules (%.ir rule): Don't produce deps for imports.
* elf/dl-fini.c (_dl_fini): Clear L->l_init_called after calling fn.
* Makerules (install): Depend on $(slibdir)/libc.so$(libc.so-version).
[!subdir] ($(libdir)/libc.so, $(common-objpfx)/libc-syms.so): Protect
these targets and install dep on $(libdir)/libc.so with this.
* hurd/Makefile: Removed all rules and defns for using code from Hurd
sources and installing headers from there.
* sysdeps/mach/hurd/errnos.awk: Set in_mach_errors to FILENAME when we
set it. In Mach error matching clause, only match if FILENAME is
still the same value.
* sysdeps/mach/hurd/Makefile: Don't include sysdeps/mach/Makefile;
$(mach-srcdir) no longer exists.
(hurd-srcdir): Variable removed.
(includes): Don't append -I$(hurd-srcdir).
(last-includes): Variable removed.
Remove vpath specs using $(hurd-srcdir).
(mach-errno-h): New canned sequence.
($(common-objpfx)errnos.d): New target, generated included makefile
to determine absolute file names of Mach headers to search for error
codes and set variable mach-errnos-deps.
($(common-objpfx)stamp-errnos): Depend on $(mach-errnos-deps) instead
of prior explicit list.
(generated): Add errnos.d, stamp-errnos.
* mach/Machrules (some-if-rtn): New variable and target; compute deps
of some if routine and make all if routines depend on that .d file
instead of static list of .h files.
* mach/Makefile (mach/mach_interface.defs,
mach/memory_object_user.defs): Targets removed.
($(objpfx)mach-syscalls.mk): Tweak this kludge so it doesn't depend
directly on Mach sources.
* sysdeps/mach/Makefile (mach-srcdir): Variable removed.
(includes): Don't append -I$(mach-srcdir).
Remove vpath specs using $(mach-srcdir).
* hurd/Makefile (server-interfaces): Add faultexc.
(sig): Remove it from here.
(fault%.[ch]): Rule removed.
(MIGFLAGS-faultexc): New variable.
* hurd/faultexc.defs: New file.
* mach/Machrules (%.ustamp rule): Pass $(MIGFLAGS-$*) to mig.
(%_server.[ch] rule): Likewise.
* mach/Makefile: Removed all rules and defns for using code from Mach
sources and installing headers from there.
* Makeconfig [$(build-shared)=yes] (link-libc): Append
$(libc.so-version) to libc.so.
* mach/Machrules (%.ustamp rule): Don't depend on %.defs.
(%.udeps): New rule parallel to that one, generating included
makefiles with -M output from `#include <%.defs>'.
* Makerules (sed-remove-objpfx): Remove space before \ at eol.
* hurd/hurd-raise.c (_hurd_raise_signal): Pass sigcode in msg_sig_post
rpc.
* hurd/hurdmsg.c (_S_msg_set_environment): Use argz.h functions
instead of _hurd_split_args.
(_S_msg_*_exec_flags): Functions removed.
(_S_msg_startup_dosync): Stub removed.
Sat May 4 02:11:55 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* sysdeps/mach/hurd/ptrace.c: Set _hurdsig_traced instead of
EXEC_TRACED bit in _hurd_exec_flags.
Pass sigcode arg in msg_sig_post_untraced rpc.
* sysdeps/mach/hurd/access.c: Don't pass io port in
auth_user_authenticate rpc.
* posix/sched.h: Fix typos.
* sysdeps/mach/hurd/fork.c: Use new critical section lock.
Clear _hurdsig_traced instead of EXEC_TRACED.
* sysdeps/stub/nanosleep.c (nanosleep): Fix typo.
* wcsmbs/wcstol.c: Find strtol.c in ../stdlib.
* wcsmbs/wcstof.c: Find strtod.c in ../stdlib.
* wcsmbs/wcstod.c: Likewise.
* wcsmbs/wcstold.c: Likewise.
* wcsmbs/wcwidth.h: Find cname-lookup.h in ../wctype.
* string/envz.c (envz_entry): Use const.
(envz_get, envz_remove): Likewise.
(envz_entry): Return char *, not const char *.
* string/envz.h: Fix decl.
* string/argz-create.c: Use const in prototype.
* string/argz-next.c: Likewise.
* sysdeps/mach/hurd/sigprocmask.c: Pass sigcode arg to msg_sig_post.
* sysdeps/mach/hurd/i386/sigreturn.c: Likewise.
* sysdeps/mach/hurd/sigsuspend.c: Likewise.
* sysdeps/mach/hurd/kill.c: Likewise.
* hurd/hurdexec.c (_hurd_exec): Use new critical section lock.
* hurd/catch-exc.c (_S_catch_exception_raise): Likewise.
* hurd/sigunwind.c (_hurdsig_longjmp_from_handler): Likewise.
* hurd/thread-cancel.c (hurd_thread_cancel, hurd_check_cancel):
Likewise.
* sysdeps/mach/hurd/jmp-unwind.c (_longjmp_unwind): Likewise.
* sysdeps/mach/hurd/sigaction.c: Likewise.
* sysdeps/mach/hurd/errnos.awk: Don't use ARGV in comment; it can
change meaninglessly.
* hurd/hurd/signal.h (struct hurd_sigstate): Replace critical section
flag with a spin lock.
(_hurd_critical_section_lock): Use spin_try_lock on that to see if we
get it. No need to take SS->lock at all.
(_hurd_critical_section_unlock): Unlock SS->critical_section_lock
instead of clearing the old flag member.
* hurd/hurdsig.c (_hurd_internal_post_signal): Use spin_lock_locked to
test the critical section state.
* hurd/hurdinit.c (_hurd_init): Set _hurdsig_traced from the intarray.
* hurd/hurdkill.c (_hurd_sig_post): Pass 0 sigcode in msg_sig_post.
* hurd/hurdsig.c (_hurd_internal_post_signal): Test _hurdsig_traced
instead of testing (_hurd_exec_flags & EXEC_TRACED).
(_S_msg_sig_post): Take sigcode arg and pass it through.
(_S_msg_sig_post_untraced): Likewise.
(reauth_proc): Don't pass proc port in auth_user_authenticate.
* hurd/setauth.c (_hurd_setauth): Don't pass object ports in
auth_user_authenticate RPCs, just the one-off rendezvous port.
* hurd/dtable.c (reauth_dtable): Likewise.
* hurd/hurdlookup.c (__hurd_file_name_lookup_retry): Likewise.
* hurd/hurdexec.c (_hurd_exec): Pass 0 flags to file_exec.
Pass sigcode arg to msg_sig_post.
* string/argz.h (argz_create): Use const in prototype.
* hurd/hurdinit.c (_hurd_proc_init): Test _hurdsig_traced instead of
testing (_hurd_exec_flags & EXEC_TRACED).
Pass sigcode arg to msg_sig_post.
* hurd/hurd.h: Declare _hurdsig_traced.
* string/argz.h (__argz_next): Cast ENTRY before returning it.
* hurd/hurd/signal.h (_hurd_critical_section_unlock): Pass sigcode arg
to msg_sig_post.
* hurd/path-lookup.c: New file.
* hurd/Makefile (routines): Add path-lookup.
* hurd/hurd/lookup.h: Declare file_name_path_scan,
hurd_file_name_path_lookup.
* hurd/hurd.h: Declare file_name_path_lookup.
* sysdeps/mach/hurd/select.c: The io_select rpc no longer has a TAG_ID
argument. Instead, use a separate reply port for each RPC and put them
all in a port set to wait for slow replies.
* config.h.in [HAVE_ELF || HAVE_GNU_LD]: Define HAVE_WEAK_SYMBOLS.
* stdlib/strtod.c (PASTE, PASTE1): New helper macros; use these in
access to float.h macros.
* misc/efgcvt.c: New file.
* misc/Makefile (routines): Add efgcvt.
