GCC Bugzilla upgrade to version 3.6.2 ready

[Florian Weimer]

* Frédéric Buclin:

> If nothing severe is found in the coming days, we will probably upgrade
> the production installation later this week. I think Ian will keep you
> informed about this.

It seems that the new Bugzilla does not set a Message-ID header when
sending mail.  While this is not a violation of STD 11, it might
still cause problems in some applications.