* Common window size variables in hostpreferences.  Modified VNC connection settings to allow the setting the window size when scaling is enabled.
* Save the window size to the new standard variables, but only if scaling is enabled.
* Remove the need to cast to QScrollArea by using QWidget::frameGeometry(). This relieves us of the need to cache the bordersize.
* Resize the window, don't temporarily change the minimum size of the tab widget.
* If the view size and the screen size match, automatically go into fullscreen mode. Not sure if this will be wanted by users or not.

REVIEW: 3824
CCBUG: 208845

svn path=/trunk/KDE/kdenetwork/krdc/; revision=1120109