Improved sceJpeg functions: implemented image conversion YCbCr to/from RGB.

git-svn-id: http://jpcsp.googlecode.com/svn/trunk@3362 4ab978e6-3352-0410-996c-0b42db0051c8
sceUsbCam: trying to implement image conversion from YUYV422 to RGB as this is not supported by Xuggle.

git-svn-id: http://jpcsp.googlecode.com/svn/trunk@3363 4ab978e6-3352-0410-996c-0b42db0051c8
Added test of logical operation to 3DStudio.

git-svn-id: http://jpcsp.googlecode.com/svn/trunk@3364 4ab978e6-3352-0410-996c-0b42db0051c8
Added color test operation to 3DStudio.

git-svn-id: http://jpcsp.googlecode.com/svn/trunk@3365 4ab978e6-3352-0410-996c-0b42db0051c8