rename: Fix hwloc_topology_set_userdata_export/...
rename: Fix hwloc_topology_set_userdata_export/...

rename: Fix hwloc_topology_set_userdata_export/import_callback()

This were swapped, causing strange bugs.

This commit was SVN r5562.

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