except.h (struct eh_queue): Add `next' pointer.

except.h (struct eh_queue): Add `next' pointer.

	* except.h (struct eh_queue): Add `next' pointer.
	(struct eh_status): Make x_ehqueue a pointer.
	(push_ehqueue):  Declare.
	(pop_ehqueue): Likewise.
	* except.c (expand_eh_region_end): Adjust now that ehqueue is a
	pointer.
	(expand_fixup_region_end): Likewise.
	(expand_leftover_cleanups): Likewise.
	(push_ehqueue): Define.
	(pop_ehqueue): Likewise.
	(emit_cleanup_handler): Use push_ehqueue and pop_ehqueue rather
	than doing it inline.
	(expand_start_all_catch):  Adjust now that ehqueue is a
	pointer.
	(mark_eh_queue): Mark all level of the queue.
	(mark_eh_status):  Adjust now that ehqueue is a
	pointer.
	(init_eh_for_function): Allocate ehqueue.
	(free_eh_status): Free it.
	* stmt.c (expand_cleanups): Save the ehqueue around the cleanup
	expansion for a fixup.

From-SVN: r30874