[build] Move unwinder to toplevel libgcc (v2)

[Paolo Bonzini]

On 08/05/2011 01:46 PM, Rainer Orth wrote:
>>> >>  How should we proceed with this patch, especially given the quite
>>> >>  moderate comments from most affected target maintainers?
>> >
>> >  ARM is the only target we should care a bit about.  Any chance you can try
>> >  cross-compiling it (with a combined tree it should not be hard)? Just to
>> >  see that it builds.
> I've tried to setup crosstool-NG in the past, but failed and haven't
> gotten around to debugging this yet.  I still mean to, especially given
> that I need to investigate testsuite issues in a cross environment.
>
> Nick already ok'ed the arm (and frv) parts, so we should be ok for now.

Ok then.

Paolo