Blender Git Loki

Cleanup code and comments

Limit Armature modifier to only one instance

More cleanup

Code cleanup: remove unused code

Put text to review

WIP: Add basic functions to deform

Merge branch 'blender2.8' into greasepencil-experimental

Put in place all pieces for Armature modifier

The modifier doesn't do anything yet.

Fixed some matrix fuction naming format

Software mode FOV adapted.

Merge remote-tracking branch 'remotes/origin/blender2.8' into soc-2018-npr

# Conflicts:
# release/scripts/addons_contrib
# release/scripts/startup/bl_ui/properties_physics_field.py
# source/blender/makesdna/DNA_scene_types.h
# source/tools

Merge remote-tracking branch 'origin/blender2.8' into greasepencil-object

Hard-core resetting the files to origin/blender2.8

Merge branch 'npr_tess' of https://github.com/DarkDefender/blender into soc-2018-npr

# Conflicts:
# release/scripts/addons
# release/scripts/addons_contrib
# source/blender/editors/space_outliner/outliner_draw.c
# source/blender/makesdna/DNA_scene_types.h
# source/blender/modifiers/intern/MOD_mybmesh.c
# source/tools

Add sanity check in mult_face_search

Merge with upstream changes

More opti step tweaks

Make shift fold check and radial insert check more robust

Add sanity check for radial insert face selection

Do not shift cusp edges as they might lead to CCC triangles

Remove fold check from opti wigg/split and fix new vert idx bug