Refactored a lot of code. Added a preliminary text window

Put configuration options for window so that the rendering is controlled
on initialization of window.

Improved clip function to only clip before the borders.

Added a border radius class for initializing separate border radii for
each corner.

gtktest.py

@@ -1,4 +1,4 @@
-from jgui.surface.surface import *
+from testclasses import *
 import pygtk, gtk, gobject, cairo
 from gtk import gdk