Restructure credit transaction decomposition (solves issue #689)

When a transaction has multiple outputs that go to the wallet, list these
as multiple transactions in the UI. This is also applied to generated
(coinbase) transactions. Also makes the code shorter and easier
to understand.

src/qt/transactionrecord.cpp

@@ -47,50 +47,36 @@ QList<TransactionRecord> TransactionRecord::decomposeTransaction(const CWallet *
             //
             // Credit
             //
+            BOOST_FOREACH(const CTxOut& txout, wtx.vout)
+            {
+                if(wallet->IsMine(txout))
+                {
                     TransactionRecord sub(hash, nTime);
-
-            sub.credit = nNet;
-
+                    CBitcoinAddress address;
+                    sub.idx = parts.size(); // sequence number
+                    sub.credit = txout.nValue;
                     if (wtx.IsCoinBase())
                     {
                         // Generated
                         sub.type = TransactionRecord::Generated;
-
-                if (nCredit == 0)
-                {
-                    int64 nUnmatured = 0;
-                    BOOST_FOREACH(const CTxOut& txout, wtx.vout)
-                        nUnmatured += wallet->GetCredit(txout);
-                    sub.credit = nUnmatured;
-                }
                     }
-            else
+                    else if (ExtractAddress(txout.scriptPubKey, address) && wallet->HaveKey(address))
                     {
-                bool foundAddress = false;
                         // Received by Bitcoin Address
-                BOOST_FOREACH(const CTxOut& txout, wtx.vout)
-                {
-                    if(wallet->IsMine(txout))
-                    {
-                        CBitcoinAddress address;
-                        if (ExtractAddress(txout.scriptPubKey, address) && wallet->HaveKey(address))
-                        {
                         sub.type = TransactionRecord::RecvWithAddress;
                         sub.address = address.ToString();
-                            foundAddress = true;
-                            break;
-                        }
                     }
-                }
-                if(!foundAddress)
+                    else
                     {
-                    // Received by IP connection, or other non-address transaction like OP_EVAL
+                        // Received by IP connection (deprecated features), or a multisignature or other non-simple transaction
                         sub.type = TransactionRecord::RecvFromOther;
                         sub.address = mapValue["from"];
                     }
-            }
+
                     parts.append(sub);
                 }
+            }
+        }
         else
         {
             bool fAllFromMe = true;