Blender Git Loki

Fix some RNA/scene issuess with unified paint settings.

Added RNA for the unified paint setting flags that matches the Brush
RNA. Fixed the getter/setter functions to avoid guessing which Scene's
UnifiedPaintSetting to use. The getter functions take a Scene pointer
now, the setter functions are removed in favor of a more explicit
approach through RNA:

Rather than RNA choosing whether a property's value is in the Brush or
in the UnifiedPaintSettings, there are now explicit properties for
both. The UI code has been modified accordingly to switch the toggle
buttons between affecting the Brush and the UnifiedPaintSettings.