Log Message:
Update to 2.22
--------------
2.22 Thu May 14 04:04:03 CEST 2015
        - ipv6 literals were not correctly parsed (analyzed by Raphael Geissert).
        - delete the body when mutating request to GET request when
          redirecting (reported by joe trader).
        - send proxy-authorization header to proxy when using CONNECT
          (reported by dzagashev@gmail.com).
        - do not send Proxy-Authroization header when not using a proxy.
        - when retrying a persistent request, switch persistency off.
        - added t/02_ip_literals.t.