[PATCH] Android: Port eglretracer for Android

[Alexander Monakov]

> On the other hand, according to the init() in this patch, glws_waffle
> supports only Android.  And I know no Android device that supports non-ES
> OpenGL. Until glws_waffle acquires support for other operating systems, I
> prefer that code that is known to fail not be present in this file.

The patch tries to handle OpenGL compatibility profile, which is not available
yet on Android either.  It would make sense to drop the compat profile
handling from the patch as well.

Please also factor out repeating code from the switch statements.

Alexander