Proposed patch for libnbcompat to improve support of OpenBSD, Interix and Haiku

["OBATA Akio" <obache%netbsd.org@localhost>]

Attached patch is acceptable? any comments?

1. kill __weak_alias in db1 part, same as other part in libnbcompat. (PR#42102, 
for OpenBSD)
2. No NBBY in Haiku, define as 8 in files/nbcompat/db.h.
3. check libntework for socket in configure (Haiku)
3. check endian.h in configure and use it in files/nbcompat/endian.h (Haiku)
4. check optarg same as optind, it is used in files/nbcompat/unistd.h, but 
never checked.
5. check optreset with getopt.h in configure, include getopt.h in 
files/nbcompat/getopt.h,
   and guard redefinitions, for Interix-6.0 (PR#42379).

--
"Of course I love NetBSD":-)
OBATA Akio / obache%NetBSD.org@localhost

Attachment: patch.diff
Description: Binary data