* include/stdlib.h: Use libc_hidden_proto for qsort.

* include/stdlib.h: Use libc_hidden_proto for qsort.

	* stdlib/msort.c: Add libc_hidden_def.

	* include/utime.h: Use libc_hidden_proto for utime.
	* sysdeps/generic/utime.c: Add libc_hidden_def.
	* sysdeps/unix/utime.c: Likewise.

	* sysdeps/generic/utmp_file.c (LOCK_FILE): sigemptyset -> __sigemptyset
	* sysdeps/posix/profil.c (__profil): sigfillset -> __sigfillset
	* sysdeps/posix/sprofil.c (__sprofil): Likewise.
	* shadow/lckpwdf.c (__lckpwdf): Likewise (both).
	* sysdeps/posix/spawni.c (__spawni): sigismember -> __sigismember

	* include/signal.h: Use libc_hidden_proto for raise, sigemptyset,
	sigfillset, sigismember, __sigpause, __libc_current_sigrtmin,
	and __libc_current_sigrtmax.
	* signal/sigismem.c: Add libc_hidden_def.
	* signal/sigfillset.c: Likewise.
	* signal/sigempty.c: Likewise.
	* sysdeps/generic/sigpause.c (__sigpause): Likewise.
	* sysdeps/posix/sigpause.c (__sigpause): Likewise.
	* sysdeps/unix/bsd/osf/alpha/sigpause.S: Likewise.