Set initial extra_integer values to invalid_id
Set initial extra_integer values to invalid_id

This might make debugging easier later.

BalticPinguin/libmesh,capitalaslash/libmesh,pbauman/libmesh,roystgnr/libmesh,libMesh/libmesh,capitalaslash/libmesh,BalticPinguin/libmesh,BalticPinguin/libmesh,pbauman/libmesh,dschwen/libmesh,jwpeterson/libmesh,libMesh/libmesh,roystgnr/libmesh,libMesh/libmesh,jwpeterson/libmesh,roystgnr/libmesh,pbauman/libmesh,BalticPinguin/libmesh,dschwen/libmesh,90jrong/libmesh,hrittich/libmesh,libMesh/libmesh,jwpeterson/libmesh,jwpeterson/libmesh,capitalaslash/libmesh,pbauman/libmesh,BalticPinguin/libmesh,libMesh/libmesh,90jrong/libmesh,BalticPinguin/libmesh,hrittich/libmesh,jwpeterson/libmesh,hrittich/libmesh,jwpeterson/libmesh,90jrong/libmesh,libMesh/libmesh,hrittich/libmesh,hrittich/libmesh,pbauman/libmesh,dschwen/libmesh,dschwen/libmesh,hrittich/libmesh,90jrong/libmesh,pbauman/libmesh,hrittich/libmesh,capitalaslash/libmesh,dschwen/libmesh,90jrong/libmesh,roystgnr/libmesh,BalticPinguin/libmesh,hrittich/libmesh,pbauman/libmesh,capitalaslash/libmesh,hrittich/libmesh,BalticPinguin/libmesh,capitalaslash/libmesh,roystgnr/libmesh,90jrong/libmesh,roystgnr/libmesh,capitalaslash/libmesh,pbauman/libmesh,pbauman/libmesh,libMesh/libmesh,dschwen/libmesh,90jrong/libmesh,capitalaslash/libmesh,roystgnr/libmesh,dschwen/libmesh,roystgnr/libmesh,libMesh/libmesh,jwpeterson/libmesh,90jrong/libmesh,dschwen/libmesh,90jrong/libmesh,jwpeterson/libmesh