Move all the things (YES. Move them.)

Also, implemented some basic modlist logic, to be wired up.

logic/LegacyUpdate.h

@@ -0,0 +1,67 @@
+/* Copyright 2013 MultiMC Contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <QObject>
+#include <QList>
+#include <QUrl>
+
+#include "net/DownloadJob.h"
+#include "tasks/Task.h"
+#include "BaseUpdate.h"
+
+class MinecraftVersion;
+class BaseInstance;
+
+class LegacyUpdate : public BaseUpdate
+{
+	Q_OBJECT
+public:
+	explicit LegacyUpdate(BaseInstance *inst, QObject *parent = 0);
+	virtual void executeTask();
+	
+private slots:
+	void lwjglStart();
+	void lwjglFinished( QNetworkReply* );
+	void lwjglFailed();
+	
+	void jarStart();
+	void jarFinished();
+	void jarFailed();
+	
+	void extractLwjgl();
+	
+	void ModTheJar();
+private:
+	
+	QSharedPointer<QNetworkReply> m_reply;
+	
+	// target version, determined during this task
+	// MinecraftVersion *targetVersion;
+	QString lwjglURL;
+	QString lwjglVersion;
+	
+	QString lwjglTargetPath;
+	QString lwjglNativesPath;
+private:
+	JobListPtr legacyDownloadJob;
+	JobListQueue download_queue;
+	
+	// target version, determined during this task
+	QSharedPointer<MinecraftVersion> targetVersion;
+};
+
+