Overhaul default hosts configuration.

- When no virtualhosts are defined, and the default localhost/localhost is
  effective, the post-install script now adds DEFAULT_EMAIL_HOST,
  DEFAULT_URL_HOST, and add_virtualhost() lines to mm_cfg.py.

  Add corresponding support to remove unchanged configurations to the
  deinstall script.

- While here, overhaul crontab configuration to only request a merge if the
  crontab had been modified, and unify progress reports.

- Merge pkg-deinstall into pkg-install, to avoid duplication of code
  that might be missed in later maintenance.

PR:		225961
Reported by:	Terry Kennedy

1 files changed, 8 insertions, 2 deletions

diff --git a/UPDATING b/UPDATING
index dd2074c5d053..2555946dca19 100644
--- a/UPDATING
+++ b/UPDATING
@@ -70,12 +70,18 @@ you update your ports collection, before attempting any port upgrades.
   and DEFAULT_URL_HOST to "localhost" statically, and the rc script
   will check this and refuse to start on next boot.
 
-  Users must configure DEFAULT_EMAIL_HOST and DEFAULT_URL_HOST in 
-  Mailman/mm_cfg.py properly.
+  Users must configure DEFAULT_EMAIL_HOST and DEFAULT_URL_HOST in
+  Mailman/mm_cfg.py properly and add this line below:
+  add_virtualhost(DEFAULT_URL_HOST, DEFAULT_EMAIL_HOST)
 
   A short example has been added to:
   ${PREFIX}/local/share/doc/mailman/FreeBSD-post-install-notes.
 
+  As of 2.1.26_3, the post-install script will add back the prior
+  default settings to mm_cfg.py (instead of Defaults.py) if no
+  virtual hosts have been defined, to cover the normal use cases
+  and initial installation.
+
 20180201:
   AFFECTS: users of editors/emacs* and all ports using Emacs via USES=emacs
   AUTHOR: jrm@FreeBSD.org