This patch replaces MFaces by MLoopTris in dynamic_paint
Subtask of T45474: Deprecate legacy MFace data storage
I still havent touched the 2 occasions where MFace is in concert with BVHTree here (see comments in code).
I am not tooo familiar with dynamic paint but from my (limited) tests [tried to use most available options once], everything seems to be working as before [master]
- replaced the last occurences of MFace here (thanks to the new looptri funcs for the BVHTree)
- had to replace "RE_sample_material_color" as well (and made a looptri version "RE_sample_material_color_looptri")