Fix https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5608 :
getopt() can/should normally be found in unistd.h, so:
- When testing for getopt(), define that we HAVE_GETOPT instead of
HAVE_GETOPT_H (to avoid confusion).
- Don't attempt to include getopt.h: not all OS's have it (for example,
Solaris 9 does not).
- (All the places which need getopt already include unistd.h (if we have it).)
If this breaks things on some OS, we might need (a real) HAVE_GETOPT_H check.
git-svn-id: http://anonsvn.wireshark.org/wireshark/trunk@38437
f5534014-38df-0310-8fa8-
9805f1628bb7