Code review comment for lp:~mc-return/compiz/compiz.merge-fix1169353-screenshot-needs-color-options

Okay, all fixed now, except the
the-screenshot-selection-overlay-is-visible-on-screenshots-if-fbos-are-enabled issue...

The rest works perfectly now - had to fix some additional issues, please see
http://bazaar.launchpad.net/~mc-return/compiz/compiz.merge-fix1169353-screenshot-needs-color-options/revision/3661
for details.

The preview was overdrawing all the time, if no cursor movement was done. <- Fixed now.
The whole screen was damaged, instead of just the selection rectangle. <- Fixed now as well.