Updated the new module changes to use more compile/link-time checking rather than runtime checking.

src/modules/thread/ThreadModule.h

@@ -42,7 +42,6 @@ class ThreadModule : public love::Module
 {
 public:
 
-	ThreadModule();
 	virtual ~ThreadModule() {}
 	virtual LuaThread *newThread(const std::string &name, love::Data *data);
 	virtual Channel *newChannel();
@@ -50,6 +49,7 @@ public:
 
 	// Implements Module.
 	virtual const char *getName() const;
+	virtual ModuleType getModuleType() const { return M_THREAD; }
 
 }; // ThreadModule