message: Workaround for bug in extversion
  extversion currently does not support numbers greater than 256,000,000.
diff: @@ -12,13 +12,13 @@ struct Params;
  }
  /** BU's default for -limitancestorcount, max number of in-mempool ancestors */
  -static const uint64_t BU_DEFAULT_ANCESTOR_LIMIT = std::numeric_limits<uint64_t>::max();
  +static const uint64_t BU_DEFAULT_ANCESTOR_LIMIT = 256 * 1000000;
  /** BU's default for -limitancestorsize, maximum kilobytes of tx + all in-mempool ancestors. */
  -static const uint64_t BU_DEFAULT_ANCESTOR_SIZE_LIMIT = std::numeric_limits<uint64_t>::max();
  +static const uint64_t BU_DEFAULT_ANCESTOR_SIZE_LIMIT = 256 * 1000;
  /** BU's default for -limitdescendantcount, max number of in-mempool descendants */
  -static const uint64_t BU_DEFAULT_DESCENDANT_LIMIT = std::numeric_limits<uint64_t>::max();
  +static const uint64_t BU_DEFAULT_DESCENDANT_LIMIT = 256 * 1000000;
  /** BU's default for -limitdescendantsize, maximum kilobytes of in-mempool descendants. */
  -static const uint64_t BU_DEFAULT_DESCENDANT_SIZE_LIMIT = std::numeric_limits<uint64_t>::max();
  +static const uint64_t BU_DEFAULT_DESCENDANT_SIZE_LIMIT = 256 * 1000;
  /** Network default for the max number of in-mempool ancestors */
  