******** fig5.21a **********

	HASH_TABLE
	rehash( HASH_TABLE H )
	{
		unsigned int i, old_size;
		cell *old_cells;

/*1*/		old_cells = H->the_cells;
/*2*/		old_size = H->table_size;

/*3*/		H = initialize_table( 2*old_size );	/* Get a new, empty table */

			/* Scan through old table, reinserting into new */
/*4*/		for( i=0; i<old_size;i++ )
/*5*/			if( old_cells[i].info == legitimate )
/*6*/				insert( old_cells[i].element, H );

/*7*/		free( old_cells );

/*8*/		return H;
	}