Preserve extra ints and mapping data in flatten()
Preserve extra ints and mapping data in flatten()

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