- Fixed a bug that would cause buildout to break while computing a
  directory hash if it found a broken symlink (Launchpad #250573)

docs for find-links, I'm not 100% on the order of location searching but hopefully someone can review...

  substitutions are used to name standard directories, as in::

[buildout]
    eggs-directory = ${buildout:directory}/develop-eggs

testing require higher versions. :(

Try using 0 version on trunk.

zip-safeness on windows.

  errors) even without the -D option.

- pyc and pyo files are regenerated for installed eggs so that the
  stored path in code objects matches the the install location.

eggs.

zc.buildout.easy_install.install if the user didn't use an unzip
option. This is to allow defaults set at the buildout level to be honored.

non-windows systems.

stupid windows errors less likely.

absolute before parts read them. This fix was motivated by a test
provoked reading the options before they were absoluticated. 

Added a special check for trying to remove buildout.exe, which fails
on windows and is generally pointless. :)

I'm guessing the behaviour this typo was in is to prevent updating global buildout and setuptools versions?
This could be covered more verbosely...

I hope I haven't changed any intended meaning.

Gotta love PyFlakes

  https://bugs.launchpad.net/zc.buildout/+bug/239212 is indeed solved
  in trunk

- fixed the test for the += -= syntax change.