Requiring a BZ account as part of commit access process

[Sam James]

Hi!

Fairly often, I find that new contributors with commit access don't have
a Bugzilla account and hence can't be CC'd on any regressions.

Even worse, sometimes this is even the case for actual port maintainers
too.

Can we please require that a Bugzilla account is created during the
process for commit access approval by overseers (BZ lets admins create
accounts, this should be easy), or we add it as a manual step like
updating MAINTAINERS?

I would prefer the former because it would mean they have the right
email address (@gcc.gnu.org) with privileges.

thanks,
sam