Restore a missing #include that was removed because of wrong a #ifdef
Restore a missing #include that was removed because of wrong a #ifdef

git-svn-id: b45eb58a730bface9285fcfce17223741c32356f@1619 4b44e086-7f34-40ce-a3bd-00e031736276

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