add OpelGl performance test as a separate package
Currently runs two types of tests
1. rendering performance comparison with VBO vs without VBO
   This can also work as a stress test due to the amount of triangles used.

2. rendering performance comparison with varying numbers of index buffers
   This is for bug 5660942

Change-Id: I8a7d05cf0bfaa7063302efdd7fb24519d3a3c5bf
12 files changed