Report perl version to cpanmetadb server
Checking in changes prior to tagging of version 1.6004.

Changelog diff is:

diff --git a/Changes b/Changes
index 814fe57..68babb7 100644
--- a/Changes
+++ b/Changes
@@ -1,5 +1,9 @@
 See http://github.com/miyagawa/cpanminus/ for the latest development.

+1.6004  Fri Mar  8 11:30:37 PST 2013
+   [Improvements]
+      - Add perl version to User-Agent strings
+
 1.6003  Fri Mar  8 10:57:13 PST 2013
    [Improvements]
       - Display cpanfile syntax error if any (robario)