Log Message:
Import py-netlib-0.9 as net/py-netlib.

Netlib is a collection of network utility classes, used by the
pathod and mitmproxy projects. It differs from other projects in
some fundamental respects, because both pathod and mitmproxy often
need to violate standards. This means that protocols are implemented
as small, well-contained and flexible functions, and are designed
to allow misbehaviour when needed.