Update ruby-net-http-persistent to 2.9.

=== 2.9 / 2013-07-24

* Minor enhancement
  * Added max_requests to avoid ECONNRESET for a server that allows a limited
    number of requests on a connection.  Pull request #42 by James Tucker.
  * Request failures are now raised with the backtrace of the original
    exception.  This gives better insight into the reason for the failure.
    See #41 by Andrew Cholakian.
  * OpenSSL is no longer required.  If OpenSSL is not available an exception
    will be raised when attempting to access HTTPS resources.  Feature request
    by André Arko

* Bug fixes
  * Explain the proper way of sending parameters depending upon the request
    method.  Issue #35 by André Arko.
  * Handle Errno::ETIMEDOUT by retrying the request.  Issue #36 by André Arko.
  * Requests retried by ruby 2.x are no longer retried by net-http-persistent.
  * Finish the connection if an otherwise unhandled exception happens during a
    request.  Bug #46 by Mark Oude Veldhuis.
  * detect_idle_timeout now assumes a StandardError indicates the idle timeout
    has been found.  Bug #43 by James Tucker.

www/ruby-net-http-persistent/Makefile

@@ -1,6 +1,6 @@
-# $NetBSD: Makefile,v 1.7 2012/12/17 15:14:42 taca Exp $
+# $NetBSD: Makefile,v 1.8 2013/09/15 17:37:24 taca Exp $
 
-DISTNAME=	net-http-persistent-2.8
+DISTNAME=	net-http-persistent-2.9
 CATEGORIES=	www
 
 MAINTAINER=	[email protected]

www/ruby-net-http-persistent/distinfo

@@ -1,5 +1,5 @@
-$NetBSD: distinfo,v 1.7 2012/12/17 15:14:42 taca Exp $
+$NetBSD: distinfo,v 1.8 2013/09/15 17:37:24 taca Exp $
 
-SHA1 (net-http-persistent-2.8.gem) = 709f2e4c9e21de33e945d8364a068aa568f44350
-RMD160 (net-http-persistent-2.8.gem) = c0d64b029983d21a3cc0a18a8caebdff32fbfcc4
-Size (net-http-persistent-2.8.gem) = 27648 bytes
+SHA1 (net-http-persistent-2.9.gem) = b10c1f4b01200c6a32bd4e14f51121c1b40d8283
+RMD160 (net-http-persistent-2.9.gem) = 75364468c71aa802f0f073aff19eaa212a7f182e
+Size (net-http-persistent-2.9.gem) = 30720 bytes