[Distutils] Buildout 2.2.0b1 is available fort testing

[Jim Fulton]

Changes:

- Switch dependency from ``distribute 0.6.x`` to ``setuptools 0.7.x``.

- Handle both addition and subtraction of elements (+= and -=) on the same key
  in the same section. Forward-ported from buildout 1.6.

- Suppress the useless ``Link to <URL> ***BLOCKED*** by --allow-hosts``
  error message being emitted by distribute / setuptools.

- Extend distutils script generation to support module docstrings and
  __future__ imports.

- Refactored picked versions logic to make it easier to use for plugins.

- Use ``get_win_launcher`` API to find Windows launcher (falling back to
  ``resource_string`` for ``cli.exe``).

- Remove ``data_files`` from ``setup.py``:  it was installing ``README.txt``
  in current directory during installation (merged from 1.x branch).

To try it out, copy the new bootstrap file from:

  http://downloads.buildout.org/2.2.0b1/bootstrap.py

Then run the bootstrap, making sure to include the -t option:

  python bootstrap.py -t

The -t option is necessary to use the non-final buildout release.

We'd like to release 2.2 final soon, so your testing is really
helpful.

Special thanks to Tres Seaver for updating buildout to work with
setuptools 0.7 and for reviewing and merging a number of outstanding
pull requests.  Of course, thanks to the folks to contributed the
many other changes in this release.

Jim

-- 
Jim Fulton
http://www.linkedin.com/in/jimfulton