Changed AhHoughTransformation to default use of floats (instead of double). Use -DUSE_DOUBLES=1 as compiler option to again use doubles instead of floats. See benchHough.cu / Makefile.bench.old of this commit as reference/example.
Merge branch 'develop' of github.com:AndiH/CUDA into develop

* 'develop' of github.com:AndiH/CUDA:
  Backup commit