pidgin security and bug fix update

2.7.9-3.el6 - Add patch for RH bug 684685 zero-out crypto keys before freeing. 2.7.9-2.el6 - Add patch for CVE-2011-1091 RH bug 683031. 2.7.9-1.el6 - Update to 2.7.9 RH bug 616917. - Remove patches now included upstream: pidgin-2.6.6-clientLogin-proxy-fix.patch...