Switching to OFTC

Due to recent changes concerning operational control of freenode, we have decided to move the Alpine community channels to OFTC.

We would like to thank the previous freenode management team for their work in making a friendly space for the Alpine community, and wish them luck with their new IRC network project.

Please adjust your IRC clients to use irc.oftc.net when accessing the #alpine-devel and #alpine-linux channels. We apologize for any inconvience caused by this change.