pkgsrc freeze for 2018Q4

[Thomas Klausner <tk%giga.or.at@localhost>]

Hi!

It's a bit late, but mostly everyone is probably already AFK for
holiday season...

The freeze for pkgsrc-2018Q4 will start today, 23rd of December on
22:59 UTC (23:59 CET) and will probably last until December 29.

Please don't break stuff. Don't update packages which more than a
couple of other packages depend on.

In case of doubt, ask first.

Thanks,
 Thomas