Add support for global screen origins (-origin option), handles both
Xinerama and mouse crossings.
Fix XV enable/disable sequences -- can't use card wrappers as cards have
more than one screen.
Change vesa/fbdev to use new depth-independent rotation shadow update
Fix vesa to allow starting rotation value (again)
Make vesa driver write all colormap changes in one INT10 call
the Compaq IPAQ. Use -listmodes to see supported modes. Hack the
touchscreen driver to work as a mouse pad for the VGA screen. Fixup key
bindings so xmodmap can remap IPAQ's buttons as mouse buttons.
