BF: need getActualFrameRate() in settings.py as well
BF: ioLabs component python clock issues

- ioLabs USBBox class has a .clock already (property?)
- don't need a python clock too, but useful for comparison / checking
  so just remove it for now
Merge pull request #366 from jeremygray/master

two BFs
ENH: fixed problem with RadialStim caused by new attribute setters affecting the setMask() function
ENH: partial bug fix for BufferImageStim after the new setter methods

...but it isn't fully working. Looks like a scaling/drawing issue.
The image certainly seems to be collected correctly now (it has the
right pixel size and the pixle values vary appropriately). So is
probably incorrectly scaled?
BF: setting color values did not honour the autoLog setting
ENH: Fixed another bug with shape stimuli and the _setWithOperation func

also added some tests to catch it in future
Merge branch 'master' of github.com:peircej/psychopy