message: Change the isValid description in the validaterawtransaction help text
  If a transaction isValid then it can be accpeted into the memory pool. It
  is not just the signatures that are valid, as the previous description
  was saying.
diff: @@ -1542,7 +1542,7 @@ UniValue validaterawtransaction(const UniValue &params, bool fHelp)
  "\nResult:\n"
  "{\n"
  " \"txid\" : \"value\", (string) The transaction hash\n"
  - " \"isValid\" : true|false, (boolean) If the transaction has a complete set of signatures\n"
  + " \"isValid\" : true|false, (boolean) Will the transaction be accepted into the memory pool\n"
  " \"isMineable\" : true|false, (boolean) If the transaction is mineable now\n"
  " \"isFutureMineable\" : true|false, (boolean) If the transaction is mineable in the future\n"
  " \"isStandard\" : true|false, (boolean) If the transaction is standard\n"
  