Changes: Turn on caching for simple labels
Changes: Turn on caching for simple labels

RevBy: Stanislav Ionascu, Armin Berres

Details:
Using QStaticText::AggressiveCaching improves the performance with
an acceptable amount of additional memory in comparison to using
QPixmapCache instead.

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