Minimal setup.py packaging for qpidtoollibs

Adds pypi requirements field to existing setup.py
Adds long_description field to setup.py

Contributed by Brian Bouterse <bmbouter@gmail.com>

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1579235 13f79535-47bb-0310-9956-ffa450edef68