Python 2.4 compatibility

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Originally reported by: jurko (Bitbucket: jurko, GitHub: jurko)

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setuptools/tests/test_easy_install.py module should not use the try/except/finally construct and should instead use a try/except block wrapped inside a separate try/finally block.

Without this we get ugly warnings/errors when installing setuptools on Python 3.2. This has been noticed when using the ez_setup.py bootstrap script called from another installation package, with setuptools version 0.7.2.

Current code:

        try:
            reset_setup_stop_context(
                lambda: run_setup(test_setup_py, ['install'])
            )
        except SandboxViolation:
            self.fail('Installation caused SandboxViolation')
        finally:
            sys.stdout = old_stdout
            sys.stderr = old_stderr

Corrected code (untested):

        try:
            try:
                reset_setup_stop_context(
                    lambda: run_setup(test_setup_py, ['install'])
                )
            except SandboxViolation:
                self.fail('Installation caused SandboxViolation')
        finally:
            sys.stdout = old_stdout
            sys.stderr = old_stderr

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• Bitbucket: https://bitbucket.org/pypa/setuptools/issue/21

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Original comment by jaraco (Bitbucket: jaraco, GitHub: jaraco):

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Restore Python 2.4 compatibility in test_easy_install. Fixes #21