mercurial: support Mercurial 5.5 No release notes yet, but testing shows it working with a few changes. A few tests need updating because error messages from remote ssh like our sys.stderr.write('abort: %s\n' % error) like for remote: abort: Access to %r denied will now appear on stderr instead of stdout - a very reasonable bug fix.

[tox]
minversion = 1.8
envlist = py27-pytest

[testenv]
setenv =
    PYTHONHASHSEED = 0
deps =
    -r{toxinidir}/dev_requirements.txt
    python-ldap
    python-pam
commands =
    pytest: py.test {posargs}