Included the time function to the OpenCL_utils.c file
Merge remote-tracking branch 'upstream/master'

Conflicts:
	src/OpenCL_utils.c
Merge pull request #13 from ajasja/master

Fixed the location of the opencl_kernels.cl kernel files.
Merge pull request #12 from msokunbi/master

Addition of the timing function to the OpenCL_utils.c file
Added command line parameter to accept the number of threads.

The number of threads can be passed as an optional third parameter. If it is ommited a smart default is used.

call with:
ljmd-cl.x device [thread-number] < input