- 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.
* Add a pkg-deinstall script to remove left-over dynamically generated
* Move REINPLACE_CMD up from do-install to pre-install so no .bak files
are left behind after pkg_delete 
PR: 71313 
Submitted by: Michael Johnson <email@example.com>