void pmdb_dref_own_gen( pMeshPB pmeshpb)
If refinement or derefinement modifies the partition boundary and causes some shared entities' ownership to become invalid or does not set the ownership, this operator must be called. This function will recompute ownership on partition boundaries. Currently, applications call pmdb_dref_numb_own_gen to generate ownership and global number entities. If global numbers are not needed, then this call will speed up post-ownership generation step after refinement or derefinement. If the ownership generation is taken care of during refinement or derefinement, then there will be no need to call this operator.