wumpus-basic

Copperbox revision 1765.

I've merged the modules Basic.Graphic.BaseClasses and Basic.Graphic.BaseTypes into one module Basic.Graphic.Base. This is so DrawingR can be a instance of DrawingCtxM without having to be an orphan (previously BaseClasses depended on BaseTypes).

Also, I've renamed the methods in DrawingCtxM and removed the non-overloaded functions pureDF, askDF etc. This has percolated a lot of changes through the code. Again not all the demos have been updated yet.