Cleanup: duplicate headers
Fix graph editor rename button resetting focus when escaping from it.
This is a copy of what the outliner does and seems to work.
Cycles: Code cleanup, remove dead code
Cycles: Only report exporting curves if there are particle systems on the object
Install_deps: switch to OSL 1.5.11 (ammended with blender-fixes).
Fix for previous commit (forgot to update rev UID, sorry).
Material not set in edit derived meshes after last material modification
commits.
Cleanup: duplicate headers