Add initial design notes and pseudo-code for the peer-to-peer blockchain protocol
A few minor changes made before discussion with Dan L
Most of the p2p blockchain handling and synchronization worked out
Beginnings of a test node that responds to events like the real bitshares client will,
but doesn't do any of the real blockchain manipulation.
Add missing #include
Finish basic implementation of test program for bts::net::node
Switch boost_debug_python back on to match the version of boost expected in Keyhotee windows builds
Resolve differences in signatures of methods in node_delegate