The errors.c file had grown quite large so split off this extension
code into its own file. This involved making a handful of functions
non-static.
Acked-by: Timothy Arceri <timothy.arceri@collabora.com>
For now this will be enabled in tandem with GL_OES_geometry_shader.
Should a driver come along that wants to separate them out, another
enable can be added.
Also adds the missed GL_OES_geometry_shader define in glcpp.
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Marta Lofstedt <marta.lofstedt@intel.com>
