Setuptools

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* Fixed not setting script permissions to allow execution.

* Improved sandboxing so that setup scripts that want a temporary directory
(e.g. pychecker) can still run in the sandbox.

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* Fix stupid stupid refactoring-at-the-last-minute typos. :(

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* Added support for "self-installation" bootstrapping. Packages can now
include ``ez_setup.py`` in their source distribution, and add the following
to their ``setup.py``, in order to automatically bootstrap installation of
setuptools as part of their setup process::

from ez_setup import use_setuptools
use_setuptools()

from setuptools import setup
etc...

* Added support for converting ``.win32.exe`` installers to eggs on the fly.
EasyInstall will now recognize such files by name and install them.

* Fixed a problem with picking the "best" version to install (versions were
being sorted as strings, rather than as parsed values)

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* Added support for the distutils "verbose/quiet" and "dry-run" options, as
well as the "optimize" flag.

* Support downloading packages that were uploaded to PyPI (by scanning all
links on package pages, not just the homepage/download links).

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* Add progress messages to the search/download process so that you can tell
what URLs it's reading to find download links. (Hopefully, this will help
people report out-of-date and broken links to package authors, and to tell
when they've asked for a package that doesn't exist.)

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* Added ``ez_setup.py`` installer/bootstrap script to make initial setuptools
installation easier, and to allow distributions using setuptools to avoid
having to include setuptools in their source distribution.

* All downloads are now managed by the ``PackageIndex`` class (which is now
subclassable and replaceable), so that embedders can more easily override
download logic, give download progress reports, etc. The class has also
been moved to the new ``setuptools.package_index`` module.

* The ``Installer`` class no longer handles downloading, manages a temporary
directory, or tracks the ``zip_ok`` option. Downloading is now handled
by ``PackageIndex``, and ``Installer`` has become an ``easy_install``
command class based on ``setuptools.Command``.

* There is a new ``setuptools.sandbox.run_setup()`` API to invoke a setup
script in a directory sandbox, and a new ``setuptools.archive_util`` module
with an ``unpack_archive()`` API. These were split out of EasyInstall to
allow reuse by other tools and applications.

* ``setuptools.Command`` now supports reinitializing commands using keyword
arguments to set/reset options. Also, ``Command`` subclasses can now set
their ``command_consumes_arguments`` attribute to ``True`` in order to
receive an ``args`` option containing the rest of the command line.

* Added support for installing scripts

* Added support for setting options via distutils configuration files, and
using distutils' default options as a basis for EasyInstall's defaults.

* Renamed ``--scan-url/-s`` to ``--find-links/-f`` to free up ``-s`` for the
script installation directory option.

* Use ``urllib2`` instead of ``urllib``, to allow use of ``https:`` URLs if
Python includes SSL support.