Rewrite mktime from scratch for performance, and for correctness
in the presence of leap seconds.
* time/mktime.c (ydhms_tm_diff, not_equal_tm, print_tm, check_result):
New functions.
(LEAP_SECONDS_POSSIBLE, CHAR_BIT, INT_MIN, INT_MAX,
TIME_T_MIN, TIME_T_MAX, TM_YEAR_BASE, EPOCH_YEAR): New macros.
<limits.h>, <stdlib.h>: New #includes.
(main): Support tests with given broken-down value; support benchmarks.
(__mon_lengths, debugging_enabled, printtm, dist_tm, doit,
do_normalization, normalize, BAD_STRUCT_TM, SKIP_VALUE,
<ctype.h>): Remove.
* time/time.h, time/mktime.c (__mktime_internal): New offset arg.
* time/mktime.c (mktime), time/timegm.c (timegm): Use it.
* time/mktime.c (__mon_yday): New variable; replaces `__mon_lengths'.
time/offtime.c (__offtime), time/tzset.c (compute_change): Use it.
* time/offtime.c (__offtime): Remove useless assignment
`tp->tm_isdst = -1'.
* manual/maint.texi: Update credits.
Fri Oct 6 00:28:53 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
* sysdeps/unix/common/readv.S: Moved to sysdeps/unix/bsd.
* sysdeps/unix/common/writev.S: Moved to sysdeps/unix/bsd.
* sysdeps/unix/sysv/linux/readv.c: File removed.
* sysdeps/unix/sysv/linux/writev.c: File removed.
* sysdeps/unix/configure.in: Check for readv and writev syscalls.
* sysdeps/unix/configure.in: If eval doesn't set $unix_srcname,
set it to $unix_syscall instead of $unix_function.
* locale/localeinfo.h: Rewritten for new locale system, using
locale data files and with <langinfo.h> interface.
* locale/setlocale.c: Rewritten to use locale data files.
* langinfo.h: New file.
* locale/langinfo.h: New file.
* locale/nl_langinfo.c: New file.
* locale/loadlocale.c: New file.
* locale/lc-ctype.c: New file.
* locale/lc-messages.c: New file.
* locale/lc-monetary.c: New file.
* locale/lc-numeric.c: New file.
* locale/lc-time.c: New file.
* locale/categories.def: New file.
* locale/Makefile (headers): Remove localeinfo.h.
(distribute): New variable; put localeinfo.h here, and categories.def.
(routines): Add loadlocale.
(categories): New variable.
(aux): Use that to get C-category and lc-category.
* ctype/ctype.h (_IS*): Use independent bits for all but _ISalnum.
* locale/C-ctype.c, locale/C-messages.c: New files.
* locale/C-monetary.c, locale/C-numeric.c, locale/C-time.c:
Default "C" locale data updated for new locale system.
* locale/C-collate.c: File removed.
* locale/C-ctype_ct.c: File removed.
* locale/C-ctype_mb.c: File removed.
* locale/C-response.c: File removed.
* locale/localeconv.c: Use _NL_CURRENT macro to access locale data.
* stdio/printf_fp.c, stdio/vfprintf.c, stdio/vfscanf.c,
stdlib/strtod.c, time/asctime.c, time/strftime.c:
Include ../locale/localeinfo.h and use _NL_CURRENT macro to access
locale data.
* time/localtime.c: Don't include <localeinfo.h>.
* time/tzset.c: Don't use locale items for default TZ value or
"GMT" string (use "UTC").
* stdio/vfprintf.c [USE_IN_LIBIO] (PAD): Only call the function if
WIDTH>0; update DONE.
* malloc/malloc.c (morecore): Fix last change to calculate by
blocks instead of bytes.
