Updated copyright notices to include the year 2018.
Updated copyright notices to include the year 2017.
Require IPv6 to build
global: freshen copyright git ls-files | xargs perl -p -i -e 's/(\d+)-201[0-5]/$1-2016/g;s/ (201[0-5]) Dovecot/ $1-2016 Dovecot/'
lib-imap: Fixed crash in IDLE for non-TCP connections.
Forgot to include year 2015 in earlier new files' Copyright lines.
imap: Code cleanup: Moved IDLE keepalive timer calculation to lib-imap.