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Doc, NEWS, and test_socket patch attached.  I didn't notice
any inet_aton/inet_ntoa tests in the module so I added a
couple for those as well (I excluded a test for
inet_ntoa('255.255.255.255') ;) Also included are a couple
IPv6 tests.  I'm not sure if these are appropriate, since
many systems may still lack the required support for them to
pass.  I'll leave it up to you to decide whether they should
be commented out or removed or whatever.