MxNotificationManager and MxParam initial work. (#78)

* MxNotificationManager initial work.

* Add .swp files to .gitignore.

* Checkpoint before anything too crazy with param

* Cleanup and add MxParam.

* Checkpoint for everything except MxNotificationManager::Register.

* Add int return type to MxCore::GetId instead of relying on implicit function nonsense.

* Add stlcompat.h so this can still be built on modern compilers, fix affected type size asserts.

* Switch to Mx types

* Add BUILD_COMPAT option to CMake so the project can still be built with modern compilers.

* Change vtable14 and vtable18 to Register and Unregister in MxTickleManager.

* Remove last unsigned int reference to id type.

* Remove MxList, use one inherited class per type. Improves accuracy again.

* Address compiler compatibility code review.

* Match MxNotificationManager::Register.

* Re-enable MxNotificationManager DECOMP_SIZE_ASSERT.

LEGO1/mxparam.h

@@ -0,0 +1,33 @@
+#ifndef MXPARAM_H
+#define MXPARAM_H
+
+#include "mxomnicreateparambase.h"
+#include "mxtypes.h"
+
+class MxCore;
+
+// VTABLE 0x100d56e0
+class MxParam : public MxOmniCreateParamBase
+{
+public:
+  inline MxParam(MxS32 p_type, MxCore *p_sender) : MxOmniCreateParamBase(), m_type(p_type), m_sender(p_sender){}
+
+  virtual ~MxParam(){}; // vtable+0x0 (scalar deleting destructor)
+  virtual MxParam *Clone(); // vtable+0x4
+
+  inline MxS32 GetType() const
+  {
+    return m_type;
+  }
+
+  inline MxCore *GetSender() const
+  {
+    return m_sender;
+  }
+
+private:
+  MxS32 m_type; // 0x4
+  MxCore *m_sender; // 0x8
+};
+
+#endif // MXPARAM_H