hwloc-calc.h: callback'ify the command-line parsing code
hwloc-calc.h: callback'ify the command-line parsing code

We'll use it for something else than just adding obj->cpuset

git-svn-id: 14be032f8f42541b1a281b51ae8ea69814daf20e@5247 4b44e086-7f34-40ce-a3bd-00e031736276

BlueBrain/hwloc,BlueBrain/hwloc,BlueBrain/hwloc,BlueBrain/hwloc