* linux-low.c (linux_wait_for_event): Update messages. Do not

	* linux-low.c (linux_wait_for_event): Update messages.  Do not
	reinsert auto-delete breakpoints.
	* mem-break.c (struct breakpoint): Change return type of handler to
	int.
	(set_breakpoint_at): Update handler type.
	(reinsert_breakpoint_handler): Return 1 instead of calling
	delete_breakpoint.
	(reinsert_breakpoint_by_bp): Check for the original breakpoint before
	setting a new one.
	(check_breakpoints): Delete auto-delete breakpoints and return 2.
	* mem-break.h (set_breakpoint_at): Update handler type.
	* thread-db.c (thread_db_create_event, thread_db_create_event): Update.
	* win32-low.c (auto_delete_breakpoint): New.
	(get_child_debug_event): Use it.