Distorted Android

Major:

1) in the Library, fix the fact that some applications (those that were creating their DistortedSurface objects outside of onSurfaceCreated or onSurfaceChanged) would not render after the activity went to background (press POWER to see that).
2) in the Apps, call the new 'Distorted.onPause()' API to fix the above problem...

Fixes for z-fighting.

A Lot of fixes for the issues uncovered by Olimpic.

Still at least 1 known issue: sometimes, when we re-add a Surface, some garbage pops up on the screen for a brief split second. Visible in Olimpic.

Beginnings of the 'Multiblur' app.

Improvements for the 'Cubes' and 'Effects3D' apps.

New 'Blur' App. Actual BLUR effect, of course, does not work.

FBO APP: add dynamic adding/removing the DEPTH attachment.

Correction for the 'Girl' app.

Improve the Sink app (funny?)

First attempt at the 'Mirror' app.