message: getbestblockhash implemented
diff: @@ -459,6 +459,7 @@ static const CRPCCommand vRPCCommands[] =
  { "getrawmempool", &getrawmempool, true, false },
  { "getblock", &getblock, false, false },
  { "getblockhash", &getblockhash, false, false },
  + { "getbestblockhash", &getbestblockhash, false, false },
  { "gettransaction", &gettransaction, false, false },
  { "listtransactions", &listtransactions, false, false },
  { "listaddressgroupings", &listaddressgroupings, false, false },
  