Update.

Update.

2004-01-02  Paolo Bonzini  <bonzini@gnu.org>

	* posix/regex_internal.c (re_node_set_add_intersect,
	re_node_set_merge): Rewritten.
	(re_node_set_insert, re_node_set_remove_at):
	Avoid memmove, we know what direction we should copy and that we
	are copying 32-bit words.
	(re_node_set_compare): Iterate backwards.

	* posix/regex_internal.h (re_match_context_t): Add dfa member.
	* posix/regexec.c (match_ctx_free_subtops, search_cur_bkref_entry,
	match_ctx_add_sublast, sift_ctx_init, acquire_init_state_context,
	prune_impossible_nodes, check_halt_state_context, proceed_next_node,
	sift_states_backward, update_cur_sifted_state, check_dst_limits,
	check_dst_limits_calc_pos, sift_states_bkref, transit_state,
	check_subexp_matching_top, transit_state_sb, transit_state_mb,
	transit_state_bkref, get_subexp, get_subexp_sub, check_arrival,
	check_arrival_add_next_nodes, expand_bkref_cache, check_node_accept):
	Remove dfa parameter.  Get dfa from mctxt.  Adjust callers.
	(re_search_internal): Initialize mctxt.dfa.