gnome-utils on HPUX - compile issues

[Dan Newcombe <Newcombe mordor clayton edu>]

On hpux 10.20, two parts of gnome-utils had issues: ghex and gdialog

On gdialog, _ACS_COMPAT_CODE needs to be defined before including
curses.h, otherwise it can't find a bunch of stuff in linking.

On ghex, it includes getopt.  On HPUX, there is not getopt.h, however, the
code compiled just fine by removing the include getopt.h in ghex/main.c
and ghex/gnome-support.h

	-Dan