[Dovecot] Apple patches 6-8

[Mike Abbott]

Following up.

You checked in a slightly different version of patch 6 and released it  
with 1.1.8.  We will test your solution for this and adopt it if it  
works.

We will update our code to honor both the idle timeout and the auth  
failure delay, to avoid the DoS situation you described, since you  
checked this into 1.2 not 1.1.

Thanks!