[Merge] lp:~gary-wzl77/net-cpp/dual_landing_support into lp:net-cpp

[James Henstridge]

I also tested these branches on my vivid/armhf Chromebook, and got a similar segfault in http_streaming_client_test after copying the library between build trees.
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https://code.launchpad.net/~gary-wzl77/net-cpp/dual_landing_support/+merge/302671
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