Backport importlib in the form of providing importlib.import_module(). This has
been done purely to help transitions from 2.7 to 3.1.
diff --git a/Doc/library/modules.rst b/Doc/library/modules.rst
index ec6f7cd..b5543e6 100644
--- a/Doc/library/modules.rst
+++ b/Doc/library/modules.rst
@@ -14,6 +14,7 @@
 .. toctree::
 
    imp.rst
+   importlib.rst
    imputil.rst
    zipimport.rst
    pkgutil.rst