#10 Added scrollbar support to the StaticText widget

[Ubik]

Added support for a scrollbar to the StaticText widget.

This breaks existing widget sets, since the StaticText
class becomes abstract.

This is the result of the same change in the C++ code
from which this is derived.

I also incorporated some minor font cleanups in this
patch, since they were in my code.

I will add additional patches incorporating my changes
to the WindowsLook and TaharezLook widgets.

[Ubik]

Scrollbar Support Patch