Changes: Make MWindow::setOrientationAngle withstand misuse
Changes: Make MWindow::setOrientationAngle withstand misuse

RevBy: Michał Palczewski
Details:
https://meego.gitorious.org/meegotouch/libmeegotouch/merge_requests/2110

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