Zc.lockfile

==================

- Fixed: unlocking and locking didn't work when a multiprocessing
process was running (and presumably other conditions).

==================

- Added the ability to include the hostname in the lock file content.

- Code and ReST markup cosmetics.
[alecghica]

==================

- Added Trove classifiers and made setup.py zest.releaser friendly.

- Added Python 3.2, 3.3 and PyPy 1.9 support.

- Removed Python 2.4 and Python 2.5 support.

==================

- Fixed: the fix included in 1.0.1 caused multiple pids to be written
to the lock file

==================

- Fixed: when there was lock contention, the pid in the lock file was
lost.

Thanks to Daniel Moisset reporting the problem and providing a fix
with tests.

- Added test extra to declare test dependency on ``zope.testing``.

- Using Python's ``doctest`` module instead of depreacted
``zope.testing.doctest``.

==================

- Fixed a small bug in error logging.