fix namespace conflicts (like cv::inpaint and cv::xphoto::inpaint)

whitespace fix

modules/python/src2/gen2.py

@@ -509,7 +509,7 @@ class FuncInfo(object):
                 name = "getelem"
         else:
             classname = ""
-        return "pyopencv_" + classname + name
+        return "pyopencv_" + self.namespace.replace('.','_') + '_' + classname + name
 
     def get_wrapper_prototype(self):
         full_fname = self.get_wrapper_name()