Try using our own version of glext and gl2ext for OpenGL ES
Commit patch by cfsworks to properly mark OpenAL sounds as inactive when they are created while the manager is inactive
Commit patch by cfsworks to properly copy Lens::CData::_min_fov in copy constructor
Fixed bug in BulletManifoldPoint copy assignment operator.
Maya 2015 support
Allow for mpeg2 files with the m2v extension
remove Python-2-isms from DirectGui and FSM to make them work with Python 3
Reset the state and transform before the end_frame callback (needed for Blender integration)
Fix Python 3 build issue with iterator extensions
Set interrogate module string to 'panda3d.core' instead of 'core' to make pickling work correctly.  Contact me if this breaks anything.
Merge remote-tracking branch 'origin/master' into astron-master