Update.

Update.

	* include/stdio.h (__libc_fatal): Add libc_hidden_proto.
	* include/dlfcn.h (__libc_dlopen_mode, __libc_dlsym, __libc_dlclose):
	Likewise.
	* elf/dl-libc.c (__libc_dlopen_mode, __libc_dlsym, __libc_dlclose):
	Add libc_hidden_def.
	* sysdeps/generic/libc_fatal.c (__libc_fatal): Likewise.
	* sysdeps/posix/libc_fatal.c (__libc_fatal): Likewise.
	* sysdeps/unix/sysv/linux/libc_fatal.c (__libc_fatal): Likewise.
	* elf/Versions (libc): Export __libc_dlopen_mode@@GLIBC_PRIVATE,
	__libc_dlsym@@GLIBC_PRIVATE and __libc_dlclose@@GLIBC_PRIVATE.
	* libio/Versions (libc): Export __libc_fatal@@GLIBC_PRIVATE.
	* sysdeps/generic/unwind-dw2.c: Readd #ifs removed during last
	change.
	* sysdeps/generic/unwind.inc: Removed.