Distorted Android

Fix the 'Fragment3D' app

Fix the 'FBO' app

Fix the 'Effects2D' app

Fix the 'Different Effects' app

Fix the 'Moving Effects' app

Fix the 'Macroblock' app.

Finally fix the 'when rendering though an FBO, the other side of triangles is visible'

Fix the 1x1 case! Before it used to be impossible to create a DistortedBitmap just with 2 triangles!

Minor stuff - make the Bitmaps and the Cubes agree on the size of the grid, mostly.

Vertex3D: make the Activity independent of Effects