doc: known issues with possible dependent tests When reversing the testing order, two blocks of tests fail. Document these. I spent time trying to fix them, but got nowhere. Obviously I am missing something. But this doc gives future me or somebody else a starting point.

#!/usr/bin/env python
from __future__ import print_function
import zlib, base64, sys
print(base64.encodestring(zlib.compress(sys.stdin.read())))