This allows
cd tests && python $CREW/tests/run-tests.py -j7 --extra-config-opt devel.all-warnings=no --blacklist=<(ls test*lfs*.t test*fastanno*.t) test*remotefilelog*.t
to pass when $CREW points to a clone of hg 4.7. IOW, the remotefilelog
functionality that Google cares about now works against 4.7. I'll work
on compatibility with tip next.