Advance to hwloc-2.1.0rc2-33-g38433c0f, which includes a .gitignore
update that we want here in Open MPI.
Be warned; this is actually 33 commits beyond the hwloc v2.1.0 tag.
Signed-off-by: Jeff Squyres <jsquyres@cisco.com>
Rename the component to be "hwloc2" (since it can now be any v2.x.y
version of hwloc), and make the embedded copy of hwloc be a git
submodule.
Signed-off-by: Jeff Squyres <jsquyres@cisco.com>
