moved concat to utils, fixed a few docstrings, fixed memory leak in _speedups.escape

--HG--
branch : trunk
diff --git a/docs/api.rst b/docs/api.rst
index a8d488b..6cab983 100644
--- a/docs/api.rst
+++ b/docs/api.rst
@@ -85,7 +85,7 @@
 
 
 .. autoclass:: jinja2.Template
-    :members: render, stream, generate, module
+    :members: render, stream, generate, make_module, module
 
     .. attribute:: globals