Move the clearing of support structures to hwlo...
Move the clearing of support structures to hwlo...

Move the clearing of support structures to hwloc_topology_setup_defaults()
so as to clear everything between two loads of the same topology structure.

This commit was SVN r1931.

ggouaillardet/hwloc,shekkbuilder/hwloc,ggouaillardet/hwloc,ggouaillardet/hwloc,shekkbuilder/hwloc,shekkbuilder/hwloc,shekkbuilder/hwloc,ggouaillardet/hwloc