Fixes: MPannableViewport resets all QGI flags when disabling clipping
Fixes: MPannableViewport resets all QGI flags when disabling clipping

RevBy: Stanislav Ionascu, Michał Guminiak
Details: Use QGI::setFlag to enable/disable clipping instead of QGI::setFlags.

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