Disabled most of the absurd templates in PyImgC_CImage.h
Moved the generated CImage_NPY_* types and the '&create<T, dT>()' to the 'legacy API'
... meaning: NEVER TO BE PREPROCESSED OR HEARD FROM AGAIN
Renamed CPP source directory
The PyImgC module no longer needs a leading underscore;
the new PyImgC_CPPSource directory won't also function as a python module
... it no longer contains an __init__.py
Further split up the pyimgc.cpp IMP bounty