Fix effects in OSX project. Add CCEffectHue.

- Replaces CCEffectGlow with CCEffectBloom.
- Updates image paths in the bloom test to work on OSX.
- Adds CCEffectHue and a test for it. The hue adjustments are specified in degrees ranging from -180 to 180.
You could apply a 2x2 rotation matrix calculated on the CPU here instead and save a lot of expensive trig calls. Actually... since the RGB <--> YIQ conversion is linear, could it be combined into a single color matrix? YIQ_to_RGB * rotation * RGB_to_YIQ