Make Paul Thomas a reviewer?

[Tobias Schlüter]

Strictly out of my personal interest to get faster approval for my patches
which touch the tree-building parts of our compiler, I'd like to suggest
adding Paul T. to the list of reviewers.  From the new reviewers we recently
added, (AFAIK) only I am at least somewhat familiar with the tree-building
code, so patches by me that touch those parts, tend to take a long time to review.

Sorry that I'm proposing to add even more work to your schedule, Paul :-)

- Tobi