Update.

Update.

	* sysdeps/unix/bsd/poll.c (__poll): Add code to extend sets if any
	passed file descriptor exceeds the size determined by
	getdtablesize.

	* sysdeps/unix/sysv/linux/cmsg_nxthdr.c (__cmsg_nxthdr): Update
	from inline version in bits/socket.h.

	* sysdeps/unix/sysv/linux/bits/socket.h: Define __cmsg_nxthdr as
	inline function only is __USE_EXTERN_INLINES is defined.

	* time/strftime.c (my_strftime): Make code a bit clearer.
	Patch by Paul Eggert <eggert@twinsun.com>.

	by removing SIG_IGN handler for SIGCHLD if necessary.