[SoC] Week 7 OpenCL Integration

[Seth Price]

1) What did I do last week?

I wrote the warper code for the bicubic interpolator. This was mostly  
code for sampling pixels and combining the different possible types of  
data for the different components of the pixels and a similar pixel  
setter method. So once this works, integrating the other interpolation  
methods should be relatively easy.

I've also been working on the code which moves the memory and calls  
the kernel from the program. It's mostly done; I need to finish the  
code for copying the output back to GDAL.

2) What I plan to do this week.

I'll be finishing the OpenCL code for GDAL, then debugging it. After  
that is done, I'll implement the other interpolators.

3) Do I have any problems or obstacles which will interfere with my  
work?

Just my normal tendonitis. Cortisone treatments have been effective,  
another doctor appointment in the morning...
~Seth