Blender Git Loki

WIP: More work in toolbars (still not working)

Move GPENCIL_PAINT context inside tools switch

Set icon for Brush enum

Create Enum with all Grease Pencil Drawing Brushes

Add property to check brush type

This is required by Tool system.

Remove annotation tool in Sculpt

This tool is not logic here

WIP: Initial steps to implement Sculpt brushes in Toolbar

This is not working yet and can produce segment faults.

UI: Remove obsolete function

Cleanup/Fixes

* Remove hack that's no longer needed

* Don't change the GP Eraser Size userpref property from GP Object
drawing operator, as it doesn't use that anymore. Instead, the
eraser brush's size gets adjusted instead.

Toolbar: Move Ruler into same group with Annotations (but as separate buttons)

This way, the items group up nicer when you have the 2 column
icon groupings.

Fix: Pinning GP Object data in Properties Editor wasn't showing the GP Data tab

Merge branch 'blender2.8' into greasepencil-object

Fix building & linking on Linux

Cleanup: Remove GPENCIL_OT_color_choose

This isn't used anywhere, and should really even need to be
used for any purpose.

Annotations: Don't display Annotations properties panel when GP data in context is for GP Object

Fix: Don't allow Annotation tool to paint on GP Objects and vice versa

Merge branch 'blender2.8' into greasepencil-object

Merge branch 'blender2.8' into greasepencil-object

Merge branch 'blender2.8' into greasepencil-object

Conflicts:
release/scripts/startup/bl_ui/space_view3d.py

Make Ruler works with Annotations not Grease Pencil object

Now, the ruler is using the annotation datablock (scene) and not a object with materials