tamed was originally designed with support for parallel builds in mind, but
I hadn't completed that work because we didn't have enough hardware that
we'd benefit strongly from it. That has since changed.
tamed will now spawn additional runners as needed to fulfill requests, which
works around the issue of not knowing how many jobs GNU Make is going to try
to do at once.
There were a couple minor dependency fixes/workarounds for now in the
Makefile, but otherwise everything appears to be working great.
1a35232bd8