Use Elem::mapping_type() for node constraints
Use Elem::mapping_type() for node constraints

This is probably still wrong but it should be a step in the right
direction

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