Blender Git Loki

Move Render code to separate file

Fix cache_used error in previous commit

Reuse fullscreen quads instead to create new ones

Cleanup: Remove debug lines

Remove DRW_gpencil_create_blank_texture function

This function is not needed and the same can be done with less lines.

Don't pass cache_used as pointer

The value is not changes and don't need the pointer.

Move matrix initialization to stl initialization block

Cleanup: Remove unused code

Merge branch 'blender2.8' into greasepencil-object

Conflicts:
source/blender/editors/space_outliner/outliner_draw.c

Rename grease pencil modifier callbacks

Add the prefix gp_

Fix operator to change brush size

The field was wrong after last rename

WIP: Remove duplicate fields gp_lazy_radius and gp_lazy_factor

These fields have been moved to existing smooth_stroke_radius and smooth_stroke_factor.

Resuse Brush size field instead to use separated thickness field

Pending to reorganize Brush struct to remove unused pad bytes.

Rename brush cur_xxxx to curve_xxx

Cleanup: More renames

Rename gradient and texture fields

Rename functions to use "material" instead of "color"

Rename GPC_xxx to GP_STYLE_xxx

Rename struct GpencilColorData to MaterialGPencilStyle

Rename field gpcolor to gp_style