use cpanfile to support carton
Checking in changes prior to tagging of version 3.74.

Changelog diff is:

diff --git a/Changes b/Changes
index 524cb53..6bf9f4b 100644
--- a/Changes
+++ b/Changes
@@ -1,3 +1,7 @@
+3.74 2013-03-02T10:16:26
+
+    - [Setup] use cpanfile to support Carton.
+
 3.73 2013-03-02T09:21:45

     - [Setup] Set post_only attr for CSRFDefender, by default.