RNA Types metaclass registration

See mailing list posts for details [1][2][3]

Addons still need to be fixed; Campbell said he'd do it today.

See any of the py files (outside netrender) in this commit for how to do it (it's rather simple).

[1] http://lists.blender.org/pipermail/bf-committers/2010-February/026328.html
[2] http://lists.blender.org/pipermail/bf-committers/2010-August/028311.html
[3] http://lists.blender.org/pipermail/bf-committers/2010-August/028321.html

release/scripts/templates/panel_simple.py

@@ -19,4 +19,3 @@ class OBJECT_PT_hello(bpy.types.Panel):
         row = layout.row()
         row.prop(obj, "name")
 
-bpy.types.register(OBJECT_PT_hello)