* ntreeCompositExecTree accessed 'ntree' before NULL check.
* BM_face_triangulate accessed 'f' before NULL check.
also quiet warning in BKE_text_to_curve() and add a check for BMesh bridge loops so it knows quicker if it can copy loop data or not.
* BM_vert_in_face now loops over a vert's faces rather then every vert in the face.
* rename bmesh_radial_find_first_facevert --> bmesh_radial_find_first_faceloop
* rename bmesh_radial_find_next_facevert --> bmesh_radial_find_next_faceloop
* rename BM_vert_collapse_edges --> BM_vert_collapse_edge (only collapses one)
New method of vertex shapekey propagation didn't restored coordinates in
me->mvert array which lead to unwanted deformation of basis mesh and
lead to issues like described in the report.
