Summary:
Most of these tests use `file` instead of `open` for opening files, which is removed in Python 3. And when we open files in byte mode, Python disallows writing `str` into such files, so we add `b` prefix to write actual bytes instead.
There are some other minor problems like reading from `sys.stdin` gives you `str` while expecting `bytes`. The solution is to use `sys.stdin.buffer` instead. However, Python 2 does not have `sys.stdin.buffer` so we have to do a version check to provide compatibility.
Reviewed By: quark-zju
Differential Revision: D19606357
fbshipit-source-id: e9177134294f03af8b581230a57902c3435b319a
Summary:
In preparation for merging fb-mercurial sources to the Eden repository,
move everything from the top-level directory into an `eden/scm`
subdirectory.
