Move a good chunk of the singleton objects into a new QApplication subclass.

MultiMC.h

@@ -0,0 +1,68 @@
+#pragma once
+
+#include <QApplication>
+#include "MultiMCVersion.h"
+#include "config.h"
+
+class SettingsObject;
+class InstanceList;
+class IconList;
+class QNetworkAccessManager;
+
+#if defined(MMC)
+#undef MMC
+#endif
+#define MMC (static_cast<MultiMC *>(QCoreApplication::instance()))
+
+class MultiMC : public QApplication
+{
+	Q_OBJECT
+public:
+	enum Status
+	{
+		Failed,
+		Succeeded,
+		Initialized,
+	};
+	
+public:
+	MultiMC ( int& argc, char** argv );
+	virtual ~MultiMC();
+	
+	SettingsObject * settings()
+	{
+		return m_settings;
+	};
+	
+	InstanceList * instances()
+	{
+		return m_instances;
+	};
+	
+	IconList * icons();
+	
+	Status status()
+	{
+		return m_status;
+	}
+	
+	MultiMCVersion version()
+	{
+		return m_version;
+	}
+	
+	QNetworkAccessManager * qnam()
+	{
+		return m_qnam;
+	}
+private:
+	void initGlobalSettings();
+	
+private:
+	SettingsObject * m_settings = nullptr;
+	InstanceList * m_instances = nullptr;
+	IconList * m_icons = nullptr;
+	QNetworkAccessManager * m_qnam = nullptr;
+	Status m_status = MultiMC::Failed;
+	MultiMCVersion m_version = {VERSION_MAJOR, VERSION_MINOR, VERSION_REVISION, VERSION_BUILD};
+};