Blender Git Loki

Fixed enum in modifier IDs (npr tess modifier and a merged new one)

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

# Conflicts:
# release/datafiles/locale
# release/scripts/addons_contrib
# source/blender/editors/mesh/editmesh_tools.c
# source/blender/editors/space_outliner/outliner_draw.c
# source/blender/makesdna/DNA_modifier_types.h
# source/blender/makesrna/intern/rna_modifier.c
# source/blender/modifiers/MOD_modifiertypes.h
# source/blender/modifiers/intern/MOD_util.c
# source/tools

Fixed shader variable naming style issue.

Python panel engine adaptations

Tweak how potential folds are detected in opti wigg

More work on radi insertion

Rewrite mult_radi

Modified UI for background color display and line layer on DPIX. Added console warning for software rendering.

Change cusp edge shift criteria

Added check if radial insertion flip will create a fold

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

Fix faulty opti radi extend logic

Fix some gcc warnings

Added a very basic cache system

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

Added a multithreaded variant of split ff bb

Comment spammy debug prints

Fixed opti edge flip not nulling corrected face and add sanity opti checks

Adapted shader APIs to DRW_

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