[packages/Mesa] - provide OpenGL-GLES, OpenGL-GLES-devel in libGLES, libGLES-devel (required by newest KDE)

[Marcin Krol]

> OpenGL-GLES, OpenGL-ES or OpenGLES?
> The standard's name is "OpenGL(R) ES"...
> (see http://www.khronos.org/opengles/ for more information)

I followed naming scheme already used in other specs, ie. OpenGL-GL 
instead of just OpenGL.

> Also, these packages provide two libraries conforming to different
> specifications, OpenGL ES 1.x and OpenGL ES 2.x.
>
> So I'd use P: OpenGL-ESv1 = 1.1, OpenGL-ESv2 = 2.0
> (or equivalent using OpenGL-GLESvX or OpenGLESvX scheme)

Fine by me, but I'd left generic P: OpenGL-GLES as well.

M.