netname2user, host2netname, user2netname, key_gendes. * sunrpc/netname.c: Add libc_hidden_def. * sunrpc/key_call.c: Likewise. * include/netdb.h: Use libc_hidden_proto for getaddrinfo, getnameinfo, freeaddrinfo. * inet/getnameinfo.c: Add libc_hidden_def. * sysdeps/generic/getaddrinfo.c: Likewise. * sysdeps/posix/getaddrinfo.c: Likewise. * include/wchar.h: Use libc_hidden_proto for wmemchr, wmemset. * wcsmbs/wmemchr.c: Add libc_hidden_def. * wcsmbs/wmemset.c: Add libc_hidden_def. * include/string.h: Move libc_hidden_proto's inside #ifndef _STRING_H. (index, rindex): Define as macros for strchr, strrchr. * string/envz.c (envz_strip): index -> strchr * include/rpc/rpc_msg.h: Use libc_hidden_proto for _seterr_reply. * sunrpc/rpc_prot.c: Add libc_hidden_def. * include/wchar.h: Use libc_hidden_proto for mbrtowc. * wcsmbs/mbrtowc.c: Add libc_hidden_weak.