Commit messages and the move to git

[Joseph Myers]

On Thu, 19 Dec 2019, Jonathan Wakely wrote:

> It might be reasonable to assume rtl-optimization and
> tree-optimization are aliases, and not treat it as suspicious if those
> two appear mixed up. And anything where bugzilla has component debug
> or lto and the commit is tree-optimization is probably OK too (that
> seems to be the case for several so far).

I've added those aliases (and the "tree-optimizatin" typo that appears a 
few times).  The case of (lto, tree-optimization) was already listed as an 
alias.

-- 
Joseph S. Myers
joseph@codesourcery.com