make dist broken
[git|master] weasel@valiant:.../obfsproxy$ git rev-parse HEAD
a58146de85899f73a2c8b9abe3b8de8b6cb25dc8
[git|master] weasel@valiant:.../obfsproxy$ make dist
make: *** No rule to make target doc/protocol-spec.txt', needed by
distdir'. Stop.