* Improve rendering to TextureView
UiHelper wasn't calling the resize callback at init time when attaching
to a TextureView, but it was for a SurfaceView. This makes both code
paths consistent and fixes the standard samples if they are modified to
render to a TextureView.
This change also adds a new sample app that shows how to render into
a TextureView.
* Suppress warning
* Suppress another warning
* Turn on shaders optimization by default
Release builds of Filament only work well with optimize shaders,
turning optimizations on by default will help avoid mismatches.
This change also adds -g to disable all optimizations, for debug
builds.
* Use -g on debug builds
* Use -g on debug builds
* Update tutorial_redball.md to remove matc's -O
* Update tutorial_suzanne.md to remove matc's -O
* Use -g in debug builds
