Changes: initialize pixmaps transparent/green
Changes: initialize pixmaps transparent/green

RevBy: Peter, Jörgen

Details:
In the release builds temporary pixmaps should be transparent and
not visible at all. Optionally for debugging purposes they can be
rendered in green.

nemomobile-graveyard/libmeegotouch,nemomobile-graveyard/libmeegotouch,nemomobile-graveyard/libmeegotouch,nemomobile-graveyard/libmeegotouch,nemomobile-graveyard/libmeegotouch,nemomobile-graveyard/libmeegotouch