integrate changes from bind 4.9 (most of them); continue to use address

integrate changes from bind 4.9 (most of them); continue to use address
INADDR_ANY rather than 127.1; convert u_short to u_int16_t as appropriate

SCCS-vsn: lib/libc/net/gethostnamadr.c 6.49
SCCS-vsn: lib/libc/net/herror.c 6.7
SCCS-vsn: lib/libc/net/res_comp.c 6.23
SCCS-vsn: lib/libc/net/res_debug.c 5.37
SCCS-vsn: lib/libc/net/res_init.c 6.16
SCCS-vsn: lib/libc/net/res_mkquery.c 6.17
SCCS-vsn: lib/libc/net/res_query.c 5.12
SCCS-vsn: lib/libc/net/res_send.c 6.28