GNU Radio 3.8 support

https://wiki.gnuradio.org/index.php/GNU_Radio_3.8_OOT_Module_Porting_Guide

Change-Id: I23dd638c8c48ed0a4b50559ce33fbd5e60b7dcbc
diff --git a/docs/doxygen/doxyxml/generated/compound.py b/docs/doxygen/doxyxml/generated/compound.py
index 1522ac2..de4f506 100644
--- a/docs/doxygen/doxyxml/generated/compound.py
+++ b/docs/doxygen/doxyxml/generated/compound.py
@@ -1,17 +1,19 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """
 Generated Mon Feb  9 19:08:05 2009 by generateDS.py.
 """
+from __future__ import absolute_import
+from __future__ import unicode_literals
 
-from string import lower as str_lower
+
 from xml.dom import minidom
 from xml.dom import Node
 
 import sys
 
-import compoundsuper as supermod
-from compoundsuper import MixedContainer
+from . import compoundsuper as supermod
+from .compoundsuper import MixedContainer
 
 
 class DoxygenTypeSub(supermod.DoxygenType):