Blender Git Loki

Merge remote-tracking branch 'origin/master' into fracture_modifier-2.8

# Conflicts:
# release/scripts/addons
# release/scripts/addons_contrib
# source/blender/blenkernel/BKE_rigidbody.h
# source/blender/blenkernel/intern/rigidbody.c
# source/blender/depsgraph/intern/builder/deg_builder_relations.cc
# source/blender/editors/physics/rigidbody_constraint.c
# source/blender/makesrna/intern/rna_rigidbody.c