Distorted Android

Add quality levels in Glow APP.

Improve 'Glow' app.

New 'Glow' app.

Rename the last 'Glow' app.

Fix 'Bitmap Tree' APP. Now 28 out of 31 APPs work.

Beginnings of the GLOW unit test.

Progress with any depth MeshCubes.

Progress with any depth MeshCubes.

First try to convert the Stencil app to a dual (directly to Screen / through intermediate Framebuffer) mode.
Doesn't work yet ( API is inconvenient / plain wrong )

1. Correct some bugs in DistortedRenderState
2. Thus make the Stencil App work
3. New icon for it