Updates to Paned and TextCellView

I have implemented the following changes:
1) Xwt.Paned did not received MovePanel signals from GTK.Paned, so I watched the events being sent to Paned and detected any time that the panel had been moved, then manually fired the event to the EventSink.
2)  Updated the TextCellView to allow for font family, font weight, font size and alignment control.

This is my first time to ever try to make a change to a program's gitsource, so I hope this is correct.  Please advise me if my method and/or style is not correct.

Thanks.