Small tweak to warn the user if she sets WRAPPER_ONLY and also MPI_CXX_COMPILER instead of just falling through to a failure.
Small tweak to warn the user if she sets WRAPPER_ONLY and also MPI_CXX_COMPILER instead of just falling through to a failure.

git-svn-id: d5469d78598a82f75b3d1e6419ce8b4d1ddac974@3854 aa0779c3-6ec2-4b84-a212-a405c134cd8d

pemryan/DAKOTA,pemryan/DAKOTA,pemryan/DAKOTA,pemryan/DAKOTA,pemryan/DAKOTA,pemryan/DAKOTA,pemryan/DAKOTA