[Dovecot] 0.99.11 release candidate

http://dovecot.org/rc/

So, we're back into 3 digit version numbers, 0.99.10.10 would have looked too ugly. Originally I was planning on making 0.99.10.x series only for a few months and leave 0.99.11 for the larger changes, but 1.0- tests are now used for that. Version numbering is difficult.

So, assuming there are no problems found from this RC, I'll release 0.99.11 tomorrow. Changes are:

+ 127.* and ::1 IP addresses are treated as secured with
  disable_plaintext_auth = yes
+ auth_debug setting for extra authentication debugging
+ Some documentation and error message updates
- If APPENDed mail ended with CR character, Dovecot aborted the saving
- Output streams sometimes sent data duplicated and lost part of it.
  This could have caused various strange problems, but looks like in
  practise it rarely caused real problems.