MI -trace-find, print frame with LOC_AND_ADDRESS instead of SRC_AND_LOC.

MI -trace-find, print frame with LOC_AND_ADDRESS instead of SRC_AND_LOC.

When I looked for print_stack_frame calls in MI, I wondered why this
one passing down SRC_AND_LOC.  print_stack_frame does:

  /* For mi, alway print location and address.  */
  if (ui_out_is_mi_like_p (current_uiout))
    print_what = LOC_AND_ADDRESS;

So it really doesn't matter which value is passed down, but, to avoid
confusion in readers, it's better to use the MI standard here.
There's another SRC_AND_LOC in mi-interp.c, but that one makes sense.

gdb/
2013-08-30  Pedro Alves  <palves@redhat.com>

	* mi/mi-main.c (mi_cmd_trace_find): Use LOC_AND_ADDRESS instead of
	SRC_AND_LOC.