For software that interfaces with Bitcoin Core via RPC, it can be useful to know whether the fRelayTxes flag is set. It could be added to `getnetworkinfo`.

{
    uint64_t retval = 0;
    BOOST_FOREACH(const CBlockFileInfo &file, vinfoBlockFile) {
        retval += file.nSize + file.nUndoSize;
    }
    return retval;
}
void PruneOneBlockFile(const int fileNumber)