Pullup ticket #4600 - requested by wiz
mail/dovecot: build fix

Revisions pulled up:
- mail/dovecot/distinfo                                        1.120
- mail/dovecot/patches/patch-ab                                1.31

---
  Module Name: pkgsrc
  Committed By: wiz
  Date: Mon Jan 26 23:26:48 UTC 2015

  Modified Files:
  pkgsrc/mail/dovecot: distinfo
  pkgsrc/mail/dovecot/patches: patch-ab

  Log Message:
  unregen patch-ab, since the patch context was manually reduced so that
  the managesieve patch applies cleanly together with this.

  Noted by Edgar Fu� in PR 49599.

(tron)