Changes

helpers.h: fix missing MemCache in get_next_child()

This function would infinitely loop between a NUMANode and its MemCache parent
instead of moving to IO/Misc children.

Signed-off-by: Brice Goglin <Brice.Goglin@inria.fr>

helper.h: move type/kind section above others

We'll need it in others.

Signed-off-by: Brice Goglin <Brice.Goglin@inria.fr>

helpers.h: cleanup get_next_child()

Use hwloc_obj_type_is_*() instead of hardwiring list of types.

Signed-off-by: Brice Goglin <Brice.Goglin@inria.fr>