Correctly set EGL_RENDERABLE_TYPE and EGL_CONTEXT_CLIENT_VERSION for
OpenGL ES 2.0. Because es2_info is copied from es1_info, the fix for it
actually goes to es1_info.
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
The demo programs are written by Brian Paul, and cherry-picked from
opengl-es branch. Several minor issues such as a linking problem are
fixed.
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>