Deflicker (histogram of: source raw data): fix (no scaling)
Disable "Create HDR": FIXME: this function needs adapting (cropping + scaling (B/W))
iop_dependencies.py: add rawprepare
Run iop_dependencies.py after merge!
rawprepare: scaling for raw mosaic buffers [SSE]

FIXME: figure alignment!
rawprepare: scaling for floating point buffers [SSE]
Rawprepare iop: implement OpenCL kernel (1f)!
Rawprepare iop: implement OpenCL kernel (4f)!
x-trans?