This should fix the test_os failure on the AMD64 Windows 7 buildbot.

The stdlib docs for package distribution and building extensions
are rather dated, and that isn't expected to change for 2.7 and
3.3.

The Python Packaging User Guide isn't complete either, but it's
already a much better road map for new users than the existing
stdlib docs.

no more hangs.

Initial patch by Vajrasky Kok.

Backport the fix from pyton 3.x for this issue.

Grafted from c80083ad142d.

Based on patches by Christian Heimes and Vajrasky Kok

This test requires the ifconfig executable on $PATH, /sbin/, or /usr/sbin.

of the time.  Patch by Julian Gindi.

virtual interface.  Original patch by Kent Frazier.

Issue #19638: Raise ValueError instead of crashing when converting billion character strings to float.