Fix: Distinguish peers by both IP address and port.
Until now many parts of the code assumed that IP addresses are
unique for peers. However, more than one Bitmessage instance might
be running with a given IP address due to multi-user systems or
firewalls.
Merge branch 'master' of https://github.com/Bitmessage/PyBitmessage into single_line_subject
Correct handling of old knownnodes.dat format at import.
Bug fixes in new peer handling.
Merge branch 'master' of git://github.com/grbitmsg/PyBitmessage into grbitmsg-master
Only allow 1 connection per IP
Merge pull request #360 from Atheros1/master

Support for storing multiple NATed nodes in knownnodes file.