Drop --fsroot support from lstopo and friends.
Drop --fsroot support from lstopo and friends.

--fsroot was added after branching 1.0 and never in any released tarball, 
Only --fsys-root was supported in releases, only support this one.

This commit was SVN r2401.

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