OCL inclusions in pipeline.hpp

[fa-vio]

pipeline.hpp:38
inclusion #include <ff/ocl/clEnvironment.hpp> should be within

#if defined(FF_OPENCL)

#endif

pipeline.hpp:414
the code

 if (fftree_ptr->hasOpenCLNode()) {
     // setup openCL environment
     clEnvironment::instance();
  }

should be within

#if defined(FF_OPENCL)

#endif

[jdgarciauc3m]

I created pull-request #5 for this one.

[mdrocco]

Temporarily resolved by c2ab105.
Investigation is needed to understand why this is necessary.