* sysdeps/unix/sysv/sysv4/solaris2/bits/types.h: Include
features.h and stddef.h.
* sysdeps/unix/sysv/sysv4/solaris2/bits/sigstack.h (struct
sigaltstack): Move ss_size field at the end.
Patches by Jeff Bailey <jbailey@nisa.net>.
* configure.in: Use test -f instead of test -e.
Patch by John Tobey <jtobey@banta-im.com>.
* sysdeps/unix/sysv/sysv4/solaris2/sparc/sys/trap.h: New file.
* sysdeps/unix/sysv/sysv4/solaris2/sys/syscall.h: New file.
* sysdeps/unix/sysv/sysv4/solaris2/bits/sigstack.h: New file.
* sysdeps/unix/sysv/linux/sigstack.c: Fix typo.
* sysdeps/unix/sysv/sysv4/solaris2/sigwaitinfo.c: Fix typo.
* sysdeps/unix/sysv/sysv4/solaris2/sparc/sys/ucontext.h: New file.
* sysdeps/unix/sysv/sysv4/solaris2/sys/param.h: New file.
Patches by John Tobey <jtobey@banta-im.com>.
