Log Message:
Update Irssi to 0.8.6. Taken from the NEWS:

* Tons of changes, here's only the largest that come to my mind now:
	+ SSL support by vjt at users.sf.net
	+ DCC send queues by Heikki Orsila
	+ Better support for !channels

The new Makefile.common will be used by Irssi plugins.

Approved by wiz.