new replace operation. Write to the user output the list of packages to be replaced.

queueoperation.cpp

@@ -306,6 +306,16 @@ void QueueOperation::validationFinished(bool valid)
         }
         out << endl;
     }
+    if (!m_transaction->toBeReplaced().isEmpty()) {
+        out << QObject::tr("The following packages are going to be replaced: ");
+        foreach (Akabei::Package* old, m_transaction->toBeReplaced().keys()) {
+            if (old != *(m_transaction->toBeReplaced().keys().begin()))
+                out << QObject::tr(", ");
+            Akabei::Package* newer = m_transaction->toBeReplaced().value(old);
+            out << old->name() << " (" << old->version().toByteArray() << " -> " << newer->version().toByteArray() << ")";
+        }
+        out << endl;
+    }
     out << endl;
     if (downloadSize > 0) {
         out << QObject::tr("Download size: %1").arg(Akabei::Helpers::formatByteSize(downloadSize)) << endl;