Log Message:
Update to 1.4.16. This is from Leonardo Taccari via PR 39337.
Okayed by maintainer (private email to me).

Adds DESTDIR support.

Changes from ChangeLog:

Version 1.4.16:
- Changed all scripts to '#!/usr/bin/env bash' instead of '#!/bin/sh' or
  '#!/bin/bash', because they use bash features that are not available in POSIX
  /bin/sh and because bash might not live in /bin, e.g. on BSD systems. This is
  a quick fix for Debian bug #489635.
- Accept both 250 and 251 in return of the RCPT TO command, as required by RFC
  2821 sections 4.3.2 and 3.4. Reported and fixed by Matthias Bernhardt.
  Thanks!
- Fix scripts/msmtpqueue/msmtp-runqueue.sh. An error made while applying a
  patch accidently broke it. Reported by Thomas Weber. Thanks!

Version 1.4.15:
- Added the new tls_crl_file configuration command and the corresponding
  --tls-crl-file option.
- Added the new tls_min_dh_prime_bits configuration command and the
  corresponding --tls-min-dh-prime-bits option. This closes Debian bug
  #440344.
- Added the new tls_priorities configuration command and the corresponding
  --tls-priorities option.
- Gnulib upate to 2008-06-02. Use getpass-gnu instead of getpass module.
- Add msmtpq scripts by Chris Gianniotis to the scripts directory. Suggest
  them as a replacement in the README of the msmtpqueue scripts.
- Do not let getpass() read from stdin, because we read the mail from there.
  Reported by Karol Lewandowski. Thanks!
- Updated the set_sendmail script by Gautam Iyer. Thanks!
- Return EX_TEMPFAIL instead of EX_DATAERR in case of  4xx replies to the MAIL
  FROM, RCPT TO and DATA commands. Reported by Kent Vinther Friis. Thanks!

Version 1.4.14:
- Add support for the SMTPSERVER and EMAIL environment variables. These
  variables are used when no other configuration is available. Suggested by
  Jari Aalto.
- Add the --read-envelope-from option, which extracts the envelope from address
  from the From: header.
- Fix a typo in the man page.
- Add support for Resent-* headers to the -t/--read-recipients option. Fixes
  Debian bug #464474, reported by Tim Abbott.
- Buffer read operations also when TLS/SSL is active. Fixes performance problems
  with GnuTLS, reported by Dimitrios Apostolou for mpop.
- Fixed a potential problem with VPATH builds.
- Updated gnulib to 2008-02-26. Imported havelib module.
- Always log smtpstatus and smtpmsg, even in case of success. Suggested by
  Bruno De Fraine.
- Use locale-independent c_toupper() instead of toupper() to avoid problems
  with the tr_TR.UTF-8 locale. Reported by S.Çağlar Onur. Thanks!
- Updated gnulib to 2008-02-15. Imported c-ctype module.
- Support for the Max OS X keychain was added by Jay Soffian. Thanks a lot!
- Fix network input/output timeouts for W32. Bug reported and fixed by
  Shoorick for mpop. Thanks!