Security Update: pidgin

Slackware has released two updates on -Current and one of them is marked as security update. Pidgin is upgraded to 2.9.0 and it travels back to Slackware 12.2. For some time, Pidgin package in previous Slackware version didn't receive any update, but for this update, i think it's quite severe so that Pat decided to upgrade it as well.

On -Current, gnutls is upgraded as well.