Fix several options, now all options actually work.
Enable ZLIB by default since this requires no extra depends.
End support for the ancient ORACLE option.
Approved by: wxs (mentor)
- Remove regular expression to correct PORTVERSION for MASTER_SITES/WRKSRC.
- Define USE_GHOSTSCRIPT_BUILD instead of using BUILD_DEPENDS.
- Remove NOT_FOR_ARCHS=ia64 (should work now).
- Use HAS_CONFIGURE instead of GNU_CONFIGURE to avoid workarouds for removing
automatically added but unrecognized configure options.
- Add GDBM, GTK2 and SVM options (for new modules).
- Add pkg-message to note that Vim/Emacs syntax files install in DATADIR.
- Remove USE_GCC=3.4 since it now builds with GCC 4.x.
- Increase base BDB version (now supports 4.3-4.6, not 4.2 anymore).
- Remove BROKEN when PARI module was enabled, since it doesn't segfault now.
- Remove post-configure target because the main configure includes those steps.
