[master] 697a1c3 Import std before use

[Per Buer]

commit 697a1c373b7f4a294a857fb6e9d773ae5de0e4c2
Author: Per Buer <perbu at varnish-software.com>
Date:   Mon May 5 09:15:04 2014 +0200

    Import std before use

diff --git a/doc/sphinx/whats-new/upgrading.rst b/doc/sphinx/whats-new/upgrading.rst
index 788764a..dbd8a8a 100644
--- a/doc/sphinx/whats-new/upgrading.rst
+++ b/doc/sphinx/whats-new/upgrading.rst
@@ -127,6 +127,8 @@ is reserved for builtin subs.
 req.backend.healthy replaced by std.healthy(req.backend)
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
+Remeber to import the std module if you're not doing so already.
+
 client.port, and server.port replaced by respectively std.port(client.ip) and std.port(server.ip)
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~