Almost nothing draws attributes directly and for those things that do
it's trivial to adapt them to instead draw via the cogl_primitive api.
This simplifies the Cogl api a bit.
Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit 7395925bcc01aad6c695fd0d9af78b784b3c64d4)
Conflicts:
cogl/cogl-framebuffer.c
cogl/cogl-framebuffer.h
e4f24dba75