Revert commit r2927:   "Ignore failures in test-gather-topology.sh.in"
Revert commit r2927:
  "Ignore failures in test-gather-topology.sh.in"

We now gather cpuset/cgroup properly, so test-gather-topology.sh
should work fine when cpuset/cgroup are enabled/mounted.

This commit fixes #37

git-svn-id: 14be032f8f42541b1a281b51ae8ea69814daf20e@2954 4b44e086-7f34-40ce-a3bd-00e031736276

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