Fixes #4151: Move r30353, 30354, 30365, r30795 to v1.7 branch (btl/ugni: fix typo)

---svn-pre-commit-ignore-below---

r30353 [[BR]]
btl/ugni: re-add a sendi function to exploit the new optimization in
ob1.

Also update LANL platform files to use the latest version of ugni.

cmr=v1.7.5:reviewer=manjugv

r30354 [[BR]]
btl/ugni: fix a typo in r30353

cmr=v1.7.5:ticket=#4151

r30365 [[BR]]
btl/ugni: fix leak in new sendi function.

cmr=v1.7.5:ticket=#4151

r30795 [[BR]]
btl/ugni: fix typo

cmr=v1.7.5:ticket=#4151