`printEntries` is broken

When running on raw n-tuples as well as on n-tuples processed before the implementation of Darwin::Tools::Flow, printEntries returns values such as -9223372036843535048 (the value seems constant for a given n-tuple).

I suspect the problem to originate from the use of Darwin::Tools::ChainSlice. Editing bin/printEntries.cc to use the (deprecated) Darwin::Tools::GetChain() fixes the issue, but a better solution should be found.