[PATCH] -stack-info-frames

[Nick Roberts]

 > Is "-stack-info-frame N" basically the same as "-stack-list-frames N N"?

I didn't allow -stack-info-frame an argument.  OK, lets forget this
implementation.  Perhaps we could add something about "-stack-list-frames N N"
in the documentation.  I know its kind of obvious, but I didn't realise
initially.

How about the rest of the patch:

	(mi_cmd_stack_list_frames, mi_cmd_stack_info_depth):
	Don't test for stack.
	(mi_cmd_stack_select_frame): Do not allow an argument.
	Don't test for stack.

Nick