This change adds the opengl host side decoder library (libGLESv1_dec) The library uses the GLESv1 api defintion (part of libGLESv1_enc library) used by emugen to generate the library code. It also includes The generated code is wrapped with the GLDecoder class to handle OpenGL specific semantics Change-Id: I0948f1984e538d8f6cfedc961e6296686b4be850