temporary identifiers are prefixed with "t_" now and the _node_setup_finished hack went away

--HG--
branch : trunk
diff --git a/jinja2/compiler.py b/jinja2/compiler.py
index 8dd31df..e0f02f3 100644
--- a/jinja2/compiler.py
+++ b/jinja2/compiler.py
@@ -355,7 +355,7 @@
     def temporary_identifier(self):
         """Get a new unique identifier."""
         self._last_identifier += 1
-        return 't%d' % self._last_identifier
+        return 't_%d' % self._last_identifier
 
     def buffer(self, frame):
         """Enable buffering for the frame from that point onwards."""