I've been linking people to the README in this directory, but it is hard to see with all these files in here. What do people think about it moving a subdirectory? I don't love the name.
This will make things less error prone. If we fork early in the makefile instead of sharing some infra then changes to the PHP-based test infra won't break c++ tests.
While I was there, I tried to fix the weird order that some tests had
the suite first and some had the set first. It got hard since D773384 hasn't
landed yet. When we do that, then I'll cleanup that stuff.
Paul Tarjan