Clean up prefix tests.
Clean up prefix tests.

libtetcoin/libtetcoin-consensus,swansontec/libbitcoin,libmetrocoin/libmetrocoin-consensus,swansontec/libbitcoin,libmetrocoin/libmetrocoin-consensus,libtetcoin/libtetcoin-consensus,libmetrocoin/libmetrocoin-consensus,GroestlCoin/libgroestlcoin,swansontec/libbitcoin,libmetrocoin/libmetrocoin-consensus,libtetcoin/libtetcoin-consensus,GroestlCoin/libgroestlcoin,swansontec/libbitcoin,libmetrocoin/libmetrocoin-consensus,GroestlCoin/libgroestlcoin,GroestlCoin/libgroestlcoin,libtetcoin/libtetcoin-consensus,libtetcoin/libtetcoin-consensus