Blender Git Loki

PSculpt: Hacky first attempt at "superbrush" mode for Adjust

Instead of inverting the brush behaviour, holding shift for the Adjust brush
will instead activate grab, making it easier to switch between these without
having to go via the buttons.

Verdict:
This only works partially. It still doesn't feel right - especially with the
Sintel rig, as the arm FK rotations feel like they go in the wrong directions.