* clutter/cogl/cogl.h: Rename COGLhandleARB to COGLhandle.
* clutter/cogl/gl/cogl-defines.h.in:
* clutter/cogl/gl/cogl.c: Update GL implementation of COGL.
* clutter/cogl/gles/cogl-defines.h:
* clutter/cogl/gles/cogl.c: Update GLES implementation of COGL.
* clutter/clutter-shader.c: Fix ClutterShader to use the new
COGLhandle type instead of COGLhandlerARB.