/usr/lib/python2.7/dist-packages/pylibmc-1.2.3.egg-info is in python-pylibmc 1.2.3-1+b1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/../../../share/pyshared/pylibmc-1.2.3.egg-info