Fix getbalance *

Chance "getbalance *" not to use IsTrusted.  The method and result
now match the "getbalance <specific-account>" behavior. In
particular, "getbalance * 0" now works.

Also fixed a comment -- GetGalance has required 1 confirmation
for many years, and the default "getbalance *" behavior matches
that.

src/wallet/rpcwallet.cpp

@@ -733,12 +733,12 @@ UniValue getbalance(const UniValue& params, bool fHelp)
     if (params[0].get_str() == "*") {
         // Calculate total balance a different way from GetBalance()
         // (GetBalance() sums up all unspent TxOuts)
-        // getbalance and getbalance '*' 0 should return the same number
+        // getbalance and "getbalance * 1 true" should return the same number
         CAmount nBalance = 0;
         for (map<uint256, CWalletTx>::iterator it = pwalletMain->mapWallet.begin(); it != pwalletMain->mapWallet.end(); ++it)
         {
             const CWalletTx& wtx = (*it).second;
-            if (!wtx.IsTrusted() || wtx.GetBlocksToMaturity() > 0)
+            if (!CheckFinalTx(wtx) || wtx.GetBlocksToMaturity() > 0 || wtx.GetDepthInMainChain() < 0)
                 continue;
 
             CAmount allFee;