Primitive class wrappers are not unwrapped

[ichttt]

(Originally opened as MinecraftForge/ForgeGradle#713 on the wrong repo)
This is a very minor enchancement, but it should be pretty easy to implement

See InputMapping clinit:

      MethodType methodtype = MethodType.methodType(Boolean.TYPE);
      MethodHandle methodhandle = null;
      int i = 0;

      try {
         methodhandle = lookup.findStatic(GLFW.class, "glfwRawMouseMotionSupported", methodtype);
         MethodHandle methodhandle1 = lookup.findStaticGetter(GLFW.class, "GLFW_RAW_MOUSE_MOTION", Integer.TYPE);

Integer.TYPE and Boolean.TYPE should be replaced with int.class and boolean.class respectively, as that's more easy to understand (the compiler converts any primitive .class call to the respective wrapper class .TYPE)