PATCH RFA: Build stages 2 and 3 with C++

[David Edelsohn]

On Tue, Jul 19, 2011 at 2:33 PM, Ian Lance Taylor <iant@google.com> wrote:

> I got agreement from two global reviewers and no objections.
>
> I have committed this patch.
>
> Please let me know about any problems.

This also breaks bootstrap on AIX.  I cannot debug further at the
moment because of a separate problem with the infrastructure at IBM,
but I receive the following error during the first build of libstdc++:

In file included from /farm/dje/src/src/libstdc++-v3/src/debug.cc:30:0:
/tmp/20110719/powerpc-ibm-aix5.3.0.0/libstdc++-v3/include/debug/safe_local_iterator.h:91:50:
error: 'size_t' has not been declared

- David