Blender Git Loki

Replace gl* functions by GPU*

Merge branch 'blender2.8' into greasepencil-object

Fix: All GP Paint brushes were getting added to the same group in the toolbar

WIP: Add Brush drawing settings to topbar

WIP: Set Paint toolbar

Still the bushes are inside same category

Merge branch 'blender2.8' into greasepencil-object

WIP: More changes to try to get Draw tools

Still not working

Do not include object type in name for Brush enums

WIP: Changes to make Sculpt and Weight paint tools work

This is a temp solution while we get the new toolsystem in place

Undo context changes

This can be needed by pending areas.

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.