Make more of RevisionPackager available to SourcePackager and BinaryPackager. This includes changing how SourcePackager and BinaryPackager are instantiated -- now the RevisionPackager instance is given as the first parameter to the __init__ method and most of the arguments formerly passed to __init__ are now automatiocally taken from that.

[global]
server.socketPort = 9090
server.threadPool = 10
server.environment = "production"