Fixing #139 (#140)

adding two new items to library configure:
- procOMC (default to 1 if not defined, use zero for max processors, will add -n=NN to the omc command line)
- procCCompile (default to 1 if not defined, use zero for max processors, will add -jNN to the make command line)
- deprecate the -j, --jobs argument as it can be now specified library wise

Author: adrpo