g++ testsuite fixes

[Jason Merrill]

>>>>> "Billinghurst," == Billinghurst, David (CRTS) <David.Billinghurst@riotinto.com> writes:

> Index: g++.dg/other/deprecated.C
> ===================================================================
> +/* { dg-bogus "At global scope" "" { xfail *-*-* } 0 } */

This is the wrong fix; this message should be stripped by prune_gcc_output
like all the other "In foo:" messages.

> Index: g++.dg/ext/align1.C
> ===================================================================
> +// { dg-bogus "object file alignment" "" { xfail i?86-pc-cygwin } 10 }

Perhaps this should be a target-specific dg-warning; the message isn't
actually bogus, is it?

Jason