(qty_n_refs): Make int, like reg_n_refs.

(qty_n_refs): Make int, like reg_n_refs.

(qty_first_reg, reg_next_in_qty): Make int, not short.
(local_alloc): Allocate these as arrays of ints.
(block_alloc, qty_compare_1): qty_order is now array of ints.

From-SVN: r4167