infrun.c: stop_stepping -> stop_waiting.

infrun.c: stop_stepping -> stop_waiting.

stop_stepping is called even when we weren't stepping.  It's job really is:

  static void
  stop_waiting (struct execution_control_state *ecs)
  {
  ...
    /* Let callers know we don't want to wait for the inferior anymore.  */
    ecs->wait_some_more = 0;
  }

So rename it for clarity.

gdb/
2014-05-29  Pedro Alves  <palves@redhat.com>

	* infrun.c (stop_stepping): Rename to ...
	(stop_waiting): ... this.
	(proceed): Update comment.
	(process_event_stop_test, handle_inferior_event)
	(handle_signal_stop, handle_step_into_function)
	(handle_step_into_function_backward): Update.