dac72d1665
Allows users to build customized Getdown JARs which can only talk to whitelisted hosts. This can be useful for very security-conscious organizations which want to distribute Getdown internally as a standard application bootstrapping mechanism, but want to ensure that it can only be used for internal applications. This is an adaptation of the whitelist proof-of-concept discussed on the mailing list, adjusted to use the new Build class. (Triggered by internal security audit and Fortify analysis.)