Fixes #3754: Move Portals 4 BTL and COLL components to v1.7

Copy the specified files over from trunk
Fixes #4306: Move r30828 to v1.7 branch (Silence warning)

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

r30828 [[BR]]
Silence warning

cmr=v1.7.5:reviewer=ompi-gk1.7