Moved Shape creation to PythonLanguage

Author: otethal

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/PythonLanguage.java

@@ -681,6 +681,10 @@ public Shape getShapeForClass(PythonManagedClass klass) {
         }
     }
 
+    public static Shape getShapeForClassWithoutDict(PythonManagedClass klass) {
+        return Shape.newBuilder(klass.getInstanceShape()).shapeFlags(PythonObject.HAS_SLOTS_BUT_NO_DICT_FLAG).build();
+    }
+
     public Shape getBuiltinTypeInstanceShape(PythonBuiltinClassType type) {
         int ordinal = type.ordinal();
         Shape shape = builtinTypeInstanceShapes[ordinal];

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/type/PythonManagedClass.java

@@ -360,7 +360,7 @@ public static PythonManagedClass cast(Object object) {
      */
     @TruffleBoundary
     public void setHasSlotsButNoDictFlag() {
-        instanceShape = Shape.newBuilder(instanceShape).shapeFlags(PythonObject.HAS_SLOTS_BUT_NO_DICT_FLAG).build();
+        instanceShape = PythonLanguage.getShapeForClassWithoutDict(this);
     }
 
     @ExportMessage