Merge pull request #207 from mininet/devel/exampletest

examples/baresshd.py

examples/controlnet.py

examples/hwintf.py

examples/multitest.py

examples/popenpoll.py

examples/sshd.py

examples/test/runner.py

examples/test/test_baresshd.py

examples/test/test_bind.py

examples/test/test_controllers.py

examples/test/test_controlnet.py

examples/test/test_cpu.py

examples/test/test_emptynet.py

examples/test/test_hwintf.py

examples/test/test_limit.py

examples/test/test_linearbandwidth.py

examples/test/test_multiping.py

examples/test/test_multipoll.py

examples/test/test_multitest.py

examples/test/test_nat.py