eglx: implement cogl_get_proc_address()
eglx: implement cogl_get_proc_address()

http://bugzilla.openedhand.com/show_bug.cgi?id=2124

Distrotech/cogl,djdeath/cogl,Distrotech/cogl,djdeath/cogl,djdeath/cogl-android,spatulasnout/cogl,djdeath/cogl-android,collects/cogl,Distrotech/cogl,gcampax/cogl,gcampax/cogl,gcampax/cogl,spatulasnout/cogl,Distrotech/cogl,collects/cogl,gcampax/cogl,djdeath/cogl-android,djdeath/cogl