Emulator Opengl unit test - use sperate implementation libraries

Use seperate EGL_emul, GLESv1_CM_emul and GLESv2_emul implementation
libraries.  This replaces GLES_emul that was prviously included
EGL and GLESv1.
This change enables the wrapper to support GLESv2. However,
this current EGL implementation uses the native android emulator
EGL thus will not expose this GLESv2 capability.

Change-Id: Ib0a309d71cce1248efe9a08aa59434101d0ac607
7 files changed