cogl.symbols: Add symbols required for Clutter 1.12
cogl.symbols: Add symbols required for Clutter 1.12

Those symbols were missed and are needed for Clutter-1.12.x to build.

Reviewed-by: Robert Bragg <12e9293ec6b30c7fa8a0926af42807e929c1684f@linux.intel.com>

Distrotech/cogl,Distrotech/cogl,Distrotech/cogl,Distrotech/cogl