dovecot 2.2.5

Closes #21712.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
tmux: fix HEAD

The old git repo URL is 7 months old and outdated (doesn't even contain
the 1.8 tag). Also, don't apply patches to edge version since they're
already present in master.

Closes #21713.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>