RFD: test requirements for slow platforms

[Joern Rennecke]

Quoting Paolo Bonzini <bonzini@gnu.org>:

> On 07/01/2010 03:26 PM, Joern Rennecke wrote:

>> Well, what we want for a bootstrap replacement is that it gives errors
>> for everything where a bootstrap gives errors.
>
> --enable-werror-always?

No, we don't want -Werror for files that are excluded from -Werror for
a bootstrap.  If the user/developer configured explicitly with  
--enable-werror,
and (s)he is building a cross-compiler, then it is sensible to enable -Werror
under the assumption that the build compiler will give the same warnings
as a stage1 bootstrap compiler.