Simplify Linux internal mask<->nodeset conversion
Simplify Linux internal mask<->nodeset conversion

* Use topology complete nodeset to compute a valid max_os_index
  instead of traversing the list of numa nodes
* Use bitmap from/to ith_ulong routines to manipulate masks
* Factorize a hwloc_linux_membind_mask_to_nodeset()



git-svn-id: 16596cb260ed970f4d9975c965200205db0b6693@2619 4b44e086-7f34-40ce-a3bd-00e031736276

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