[3.34] Backport intermediate shadowfb support to branch 3.34
Backports the changes from !877 (merged) to mutter 3.34
Note: the function name clutter_stage_view_blit_offscreen()
→ clutter_stage_view_after_paint()
is not part of the backport (i.e. I left the name clutter_stage_view_blit_offscreen()
unchanged for 3..34).
Edited by Olivier Fourdan