Blender Git Loki

Merge branch 'master' into blender2.8

Conflicts:
source/blender/blenkernel/BKE_material.h
source/blender/blenkernel/BKE_mesh.h
source/blender/blenkernel/intern/library_remap.c
source/blender/blenkernel/intern/material.c
source/blender/editors/object/object_relations.c
source/blender/editors/render/render_preview.c
source/blender/makesrna/intern/rna_object.c