API review - Image Ops (RT-17409)

[Jim Graham]

By popular demand in internal reviews, I've added the following methods 
to Image (with documentation analogous to the existing get/setPixels 
methods):

     public void getPixels(int x, int y, int w, int h,
                           WritablePixelFormat<ByteBuffer> pixelformat,
                           byte buffer[], int offset, int scanlineStride)
     public void getPixels(int x, int y, int w, int h,
                           WritablePixelFormat<IntBuffer> pixelformat,
                           int buffer[], int offset, int scanlineStride)

     public void setPixels(int x, int y, int w, int h,
                           WritablePixelFormat<ByteBuffer> pixelformat,
                           byte buffer[], int offset, int scanlineStride)
     public void setPixels(int x, int y, int w, int h,
                           WritablePixelFormat<IntBuffer> pixelformat,
                           int buffer[], int offset, int scanlineStride)

And a minor change to the existing get/setPixels methods to rearrange 
their parameter lists to be more aligned with the above new methods 
(note that buffer and PixelFormat have been swapped):

     public <T extends Buffer>
         void getPixels(int x, int y, int w, int h,
                        WritablePixelFormat<T> pixelformat,
                        T buffer, int scanlineStride)
     public <T extends Buffer>
         void setPixels(int x, int y, int w, int h,
                        PixelFormat<T> pixelformat,
                        T buffer, int scanlineStride)

			...jim