- Remove pkg-[de]install scripts and remove all chrome registering from
Makefile since the privilege bug seems to be fixed.
- Remove WITH_XFT option and make it default since mozilla with gtk2 won't
compile without Xft.
- Remvoe mng support, it hasn't worked in a long time.
- Lots of misc cleanup, consolidation, and removal of dupe lines.
- Change WITH_MENU_ENTRY to !WITHOUT_MENU_ENTRY since it's on by default.
- Add new OPTION (off by default), WITH_CAIRO that enables
cairo-specific canvas features.