lstopo: Relax input/output format parsing
lstopo: Relax input/output format parsing

Not case-sensitive anymore, and some may be shorten.

This commit was SVN r2278.

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