[gcc] Toplevel bootstrap fixes, 4/4

[Jan Beulich]

>>> DJ Delorie <dj@redhat.com> 21.12.05 20:59:24 >>>
>
>> autotester, I only need these.  For another configuration involving
>> --program-prefix different from ${target}-, I've historically needed
to
>> specify everything; I've used environment variables for that, which
>> seems to more or less work.
>
>/me wonders if we need a --with-build-tools=<prefix> option, instead
>of having an option for each tool.  It would seem the common case is
>to have all the tools in one group, with a common directory and
>prefix.

Fully agreed. Perhaps, if that is already in place, it doesn't hurt to
have individual options for the case where one wants to replace just one
or a few tools (say, because the default ones are buggy).

Jan