Add a "normal" test for copy_nodal_solution
Add a "normal" test for copy_nodal_solution

This indexes by solution spatial position rather than node index, and
uses a Lagrange variable rather than SCALAR and vector-valued variables,
so hopefully this one will work now in Nemesis too.

jwpeterson/libmesh,jwpeterson/libmesh,libMesh/libmesh,jwpeterson/libmesh,libMesh/libmesh,jwpeterson/libmesh,BalticPinguin/libmesh,dschwen/libmesh,roystgnr/libmesh,libMesh/libmesh,dschwen/libmesh,jwpeterson/libmesh,libMesh/libmesh,dschwen/libmesh,BalticPinguin/libmesh,jwpeterson/libmesh,roystgnr/libmesh,dschwen/libmesh,dschwen/libmesh,BalticPinguin/libmesh,roystgnr/libmesh,BalticPinguin/libmesh,roystgnr/libmesh,libMesh/libmesh,roystgnr/libmesh,BalticPinguin/libmesh,dschwen/libmesh,dschwen/libmesh,libMesh/libmesh,dschwen/libmesh,BalticPinguin/libmesh,libMesh/libmesh,jwpeterson/libmesh,BalticPinguin/libmesh,roystgnr/libmesh,roystgnr/libmesh,jwpeterson/libmesh,roystgnr/libmesh,libMesh/libmesh,BalticPinguin/libmesh