Emacs 'movemail' is now a configure-time option

The new configure option --with-mailutils lets the builder say
that Emacs should assume that GNU Mailutils is installed, instead
of continuing to build and install its own limited and insecure
substitute for 'movemail'.
* INSTALL, etc/NEWS, etc/PROBLEMS: Mention --with-mailutils.
* configure.ac: Add --with-mailutils option.
(with_mailutils): New variable.
Do not bother configuring 'movemail' when not building it.
Warn about issues relating to --with-mailutils.
* doc/emacs/rmail.texi (Movemail): Mention --with-mailutils.
(Movemail, Remote Mailboxes): Document port numbers in
POP and IMAP URLs.
* lib-src/Makefile.in (with_mailutils): New macro.
(UTILITIES): Use it.

1 files changed, 1 insertions, 0 deletions

diff --git a/etc/PROBLEMS b/etc/PROBLEMS
index b8923201014..eddae12a70f 100644
--- a/etc/PROBLEMS
+++ b/etc/PROBLEMS
@@ -323,6 +323,7 @@ or set the variable 'cannot-suspend' to a non-nil value.
 
 *** movemail compiled with POP support can't connect to the POP server.
 
+This problem can occur if you do not configure --with-mailutils.
 Make sure that the 'pop' entry in /etc/services, or in the services
 NIS map if your machine uses NIS, has the same port number as the
 entry on the POP server.  A common error is for the POP server to be