re PR libgcj/2428 (Classloader is not set)

Fix for PR libgcj/2428:
	* java/lang/natClass.cc: Include RuntimePermission.h.
	(getClassLoader): Define.
	* java/lang/Class.h (Class.getClassLoader): Only declare.

From-SVN: r48253

libjava/java/lang/Class.h

@@ -134,10 +134,7 @@ public:
   static jclass forName (jstring className);
   JArray<jclass> *getClasses (void);
 
-  java::lang::ClassLoader *getClassLoader (void)
-    {
-      return loader;
-    }
+  java::lang::ClassLoader *getClassLoader (void);
 
   java::lang::reflect::Constructor *getConstructor (JArray<jclass> *);
   JArray<java::lang::reflect::Constructor *> *getConstructors (void);