This patch adds some new bone drawing options for posemode. There are two main points of interest:
- Option to turn on/off drawing of custom bone shapes
- Posemode bones drawing with custom colours

Notes about custom colours:
- Each posemode bone can have a custom colour. This is the base colour that the faces of the bone will be in solid drawing mode, and line colour when the bone is in wireframe drawing mode.
- The colours default to black
- When a bone is selected, the colour of the wire drawn is the inverse of the colour for that bone
- Colour hints that are displayed normally (ik solver, constraints, etc.) are disabled when custom colours are on

General things:
- Modified interface slightly to jam the elements in. Probably, that might need to be checked to see if it is the most optimal solution.
- Missing a version patch so that old files saved with 'shaped bones' have the 'shaped' option turned on automatically

Aligorith