Separate NFI and Sulong parameter conversions

Author: msimacek

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/ctypes/CDataObject.java

@@ -79,7 +79,7 @@ public CDataObject(Object cls, Shape instanceShape, Pointer b_ptr, int b_size, b
         this.b_needsfree = b_needsfree;
     }
 
-    protected static CDataObjectWrapper createWrapper(StgDictObject dictObject, byte[] storage) {
+    public static CDataObjectWrapper createWrapper(StgDictObject dictObject, byte[] storage) {
         return new CDataObjectWrapper(dictObject, storage);
     }