* breakpoint.h (struct counted_command_line): New struct.

	* breakpoint.h (struct counted_command_line): New struct.
	(struct breakpoint) <commands>: Change type.
	(struct bpstats) <commands>: Change type.
	<commands_left>: New field.
	* breakpoint.c (alloc_counted_command_line): New function.
	(incref_counted_command_line): Likewise.
	(decref_counted_command_line): Likewise.
	(do_cleanup_counted_command_line): Likewise.
	(make_cleanup_decref_counted_command_line): Likewise.
	(breakpoint_set_commands): Use decref_counted_command_line and
	alloc_counted_command_line.
	(commands_command): Don't error if breakpoint commands are
	executing.
	(commands_from_control_command): Likewise.
	(bpstat_free): Update.
	(bpstat_copy): Likewise.
	(bpstat_clear_actions): Likewise.
	(bpstat_do_actions_1): Likewise.
	(bpstat_stop_status): Likewise.
	(print_one_breakpoint_location): Likewise.
	(delete_breakpoint): Likewise.
	(bpstat_alloc): Initialize new field.
	(tracepoint_save_command): Update.
	* tracepoint.c (encode_actions): Update.
	(trace_dump_command): Update.