PyHST and OpenCL

Build and install the OpenCL FFT library

• cd $OCLFFT_DIR && cmake . && make && sudo make install

as well as PyHST. Make sure to enable OpenCL support and copy the OpenCL kernel file wherever you intend to run PyHST. Please note: This has only been tested with a limited set of data and does not yet cover all features from the pure CPU version (such as FAI360 support).