gles2-renderer: Renaming some functions.
gles2-renderer: Renaming some functions.

giucam/weston,eyolfson/weston,udoprog/weston,Fantu/compositor-spice,krezovic/weston,mchalupa/weston,xorgy/weston,jonnylamb/weston,Gnurou/weston,Fantu/compositor-spice,mchalupa/weston,sir-murray/weston,kwm81/weston,Tarnyko/weston-xdg_surface_present,krezovic/weston,kwm81/weston,Fantu/compositor-spice,Gnurou/weston,udoprog/weston,sir-murray/weston,jonnylamb/weston,xorgy/weston,eyolfson/weston,Tarnyko/weston-xdg_surface_present,giucam/weston