kFeatureFullscreenMode and kFeatureAspectRatioCorrection are supported
now. The former prevents scaling to the full display - it scales one
axis and keeps the game AR.
Same issue as in the last commit: glTexSubImage2D is slow, so cache
all copyRect*() calls in a buffer, and update the dirty rect once
when drawing. Reduces CPU usage on 16bit games significantly.
Also, lockScreen() returns now pixel data for non-CLUT8 games instead
of asserting.
Split surface code into helper functions to avoid code duplication, and
distinguish between screen resizes and surface recreation. The former
happens when toggling the softkeyb, where we just have to reset the
viewport. Fixes garbled textures in those cases.
- make the startup sequence more linear
- use SurfaceHolder events
- get rid of the surface lock
- remove unnecessary JNI calls
- make the ScummVM class implement Runnable
- cleanup
