hooks: use /usr/bin/env only when needed The use of /usr/bin/env is only needed for relative arguments (or to pass variables in the environment, which we don't do). It is thus not needed in case the Python interpreter for Git hooks is known with absolute path, as introduced in 5e501b6ee639.

[tox]
minversion = 1.8
envlist = py{26,27}-pytest

[testenv]
setenv =
    PYTHONHASHSEED = 0
deps =
    -r{toxinidir}/dev_requirements.txt
    py26-pytest: unittest2
    python-ldap
    python-pam
commands =
    pytest: py.test {posargs}