Be a little more specifc for the FreeBSD's
Be a little more specifc for the FreeBSD's

This commit was SVN r1645.

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