Blender Git Loki

Merge branch 'blender2.8' into greasepencil-object

Reorganize Mask button and rename to Clamp

Now the Clamp is valid in Normal layers and the value is OFF by default.

Use Stroke Alpha when mix Normal Layers

added example functions for accessing LANPR occlusion data

Added temporary contour bypass for smooth contour modifier build.

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

# Conflicts:
# release/scripts/addons
# release/scripts/addons_contrib
# source/blender/makesdna/DNA_scene_types.h
# source/blender/makesrna/intern/rna_scene.c
# source/tools

Rename Bled Layers to Layers Blending

Merge branch 'blender2.8' into greasepencil-object

Fix multiply error when blend layer do not cover below layer

Merge branch 'blender2.8' into greasepencil-object

Fix opacity problems when value is 0

Fix noise in blend layers

The antialiasing is generating noise in intermediate layers.

Fix problems with Mask button

Fix ALT key for boundary fill strokes

Add Simplify Blend Layers option

Merge branch 'blender2.8' into greasepencil-object

Enable layer opacity in blend layers

Adjust Blend mode y Opacity to column

Use multisample for nomal blend

The layers are multisampled before blend

Hide Mask Icon in Layer list

By default is off and it's something that is using too much space