devel/libfaketime: Enable FEAT(ures), Fix typo's
- Fix FEATS variable missing from FLAGS added to CFLAGS in src/Makefile
- Explicitly set/add FEATS in MAKE_ENV, with comment about the FAKE_STAT feature (it doesn't build).
- Fix typo in man page variable name (MAN[D]IR) causing man page to be installed in PREFIX/share. Also MANDIR is relative, not absolute.
- Update PLIST_FILES accordingly.
- Bump PORTREVISION.