Change the the render() API!
THis introduces some regressions with the Effects3D app.
Major: change of API.
Split DFramebuffer into Framebuffer and Screen; introduce the 'DistortedInputSurface' and 'DistortedOutputSurface' interfaces.
Try using OpenGL ES 3.0 everywhere (but if device does not support it, try creating 2.0 context - this is important because of the emulator!)
Rename Grid to Mesh
New DistortedProgram class.
Fix a lot of Lint warnings in the apps.
Again change of API. Now instead of the 'DistortedEffects.draw() and DistortedTree.draw()' we have 'DistortedFramebuffer.renderTo()'
Change of names.
Change in the API: we always have to create a DistortedFramebuffer to render to.
Hide the 'depth' of a DistortedTexture inside the library, so users do not get exposed to this weirdness.
Beginnings of split of DistortedObject into two separate classes: DistortedEffectQueues and DistortedTexture.
Still does not compile, but pushing already.
Rename various classes; fix a bug in Around the World.
Major change in API: separate the GRID from DistortedObject; completely remove classes derived from DistortedObject.
Simplify SurfaceViews
Minor stuff
Fix the 'Macroblock' app.