minor fixes
- build with netbsd works again.
- select uv more/less was crashing when called outside image space.
- node RNA property update was crashing when not called in node space.


git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@56279 954f8c5b-7b00-dc11-b283-0030488c597c