started work on reducing RPi driver code for le2: remove disabled code, comments and obsolete declarations
moved esUtil contents over to main.cpp and removed the callbacks so lost::Engine is called directly
removed init function and moved init code into main
folded esMainLoop into main(), removing all of the timing code since fps is basically useless and the updating is handled by the engine code
removed boolean return values since they weren't checked properly anyway, asserts still missing, removed some obsolete defines
folded esCreateWindow into main(), added safe default attribList, cleaned up CreateEGLContext, made static nativewindow a nonstatic global
folded everything into main() except createNativeWindow, removed ESContext, removed hWnd