drop htonl(), htons(), ntohl(), ntohs() MD functions from libc

Userland code compiled in a normal fashion picks up the htonl(),
htons(), ntohl(), ntohs() macros implemented by endian.h. The
functio

drop htonl(), htons(), ntohl(), ntohs() MD functions from libc

Userland code compiled in a normal fashion picks up the htonl(),
htons(), ntohl(), ntohs() macros implemented by endian.h. The
functions in libc are effectively unused. Keep the MI functions
in case something looks for the symbols in libc or plays games
with #undef, but change them to wrap the implementation from
endian.h.

tweaks suggested by claudio@, ok miod@

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Switch from <sys/endian.h> or <machine/endian.h> to the new,
being-standardized <endian.h>

ok deraadt@ millert@ beck@

zap rcsid.
split functions off res_debug.c so that getnetnamadr.c does not pull it
all when it's used.

okay deraadt@, krw@

ansify. ok deraadt@ moritz@

Update {hton,ntoh}[ls] argument and return types to match changes in
<machine/endian.h>

Fix RCS ids
Make sure everything uses {SYS,}LIBC_SCCS properly

make 64 bit clean

initial import of NetBSD tree