[patch/rfc:alpha] Switch ALPHA, NS32k and VAX to unwind mechanism

[Andrew Cagney]

>> Anyone with an Alpha want to try it (I think we can suck/see the vax and 
>> ns32k ... :-)?
> 
> [...]
> 
>> 2002-08-06  Andrew Cagney  <ac131313@redhat.com>
>> 
>> 	* vax-tdep.c (vax_get_saved_register): Delete function.
>> 	(vax_gdbarch_init): Update.
>> 	* ns32k-tdep.c (ns32k_get_saved_register): Delete function.
>> 	(ns32k_gdbarch_init): Update.
>> 	* alpha-tdep.c (alpha_get_saved_register): Delete function.
>> 	(alpha_gdbarch_init): Update.
> 
> 
> The change in alpha-tdep.c introduces no new regression on alpha-tru64.
> Tested on a Tru64 5.1A alpha machine.
> 
> Just for the records, here are the results that I get with GNAT as the
> compiler:
> 
>     # of expected passes            7246
>     # of unexpected failures        680
>     # of unexpected successes       5
>     # of expected failures          149
>     # of unresolved testcases       59
>     # of untested testcases         3
>     # of unsupported tests          2

Thanks! I've committed it.

Andrew