Add missing include file to fix build.

Refs #4826
usnic: fix typo from r32438
Merge branch 'master' of https://github.com/open-mpi/ompi-svn-mirror
Merge branch 'master' of github.com:rhc54/ompi-svn-mirror
Merge branch 'master' of github.com:rhc54/ompi-svn-mirror
Bring the native multi-node operations to full working status. Some further cleanups coming, but now functional