import from bb-cvs added slit and enable-clobber defines back in Makefile.am
windows at positions x<0 or y<0 are no longer ignored in the placing code
added Inflate, Deflate, and Translate to the Rect geometry class
Slit has an area Rect now, and returns Rect, Size, and Points instead of getX/Y and getWidth/Height.
BScreen (ScreenInfo) now contains a size() instead of a getWidth/getHeight
changed OpenboxWindow to not have getFrameX/getWidth/etc functions, and to return Origins and Sizes and Rects, in fuctions like size(), origin(), and area().
adding Geometry classes: Point, Size, and Rect