Setuptools

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* Issue 254: When creating temporary egg cache on Unix, use mode 755
for creating the directory to avoid the subsequent warning if
the directory is group writable.

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* Issue 137: Update ``Distribution.hashcmp`` so that Distributions with
None for pyversion or platform can be compared against Distributions
defining those attributes.

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* Issue 360: Removed undesirable behavior from test runs, preventing
write tests and installation to system site packages.

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* BB Pull Request 125: Add ``__ne__`` to Requirement class.
* Various refactoring of easy_install.

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* Bootstrap script now accepts ``--to-dir`` to customize save directory or
allow for re-use of existing repository of setuptools versions. See
BB Pull Request 112 for background.
* Issue 285: ``easy_install`` no longer will default to installing
packages to the "user site packages" directory if it is itself installed
there. Instead, the user must pass ``--user`` in all cases to install
packages to the user site packages.
This behavior now matches that of "pip install". To configure
an environment to always install to the user site packages, consider
using the "install-dir" and "scripts-dir" parameters to easy_install
through an appropriate distutils config file.

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* Issue 359: Include pytest.ini in the sdist so invocation of py.test on the
sdist honors the pytest configuration.