[patch/rfc] Use frame_type for sigtramp test in infrun.c

[Andrew Cagney]

>>based on other discussion, I suspect the test will need to be:
>>> 
>>> if (frame_id_inner (this_frame_id, step_frame_id)
>>>     || frame_id_eq (....))
>>> 
>>> the former is to handle a signal delivery that resumed the inferior at 
>>> the signal handler and not the signal trampoline.
> 
> 
> Won't anywhere you do that frame_id_inner test add another breakage for
> sigaltstack?

Hmm, true.  Sigaltstack will break any inner test.