[dovecot/core] 6f4c61: m4: Refuse to build with OpenSSL version < 1.0.1

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/dovecot/core
  Commit: 6f4c61d8ce9cc128aaf7bcefd194671ff7eb0666
      https://github.com/dovecot/core/commit/6f4c61d8ce9cc128aaf7bcefd194671ff7eb0666
  Author: Martti Rannanjärvi <martti.rannanjarvi at dovecot.fi>
  Date:   2017-11-15 (Wed, 15 Nov 2017)

  Changed paths:
    M m4/ssl.m4

  Log Message:
  -----------
  m4: Refuse to build with OpenSSL version < 1.0.1


  Commit: 8b478435d7a697c1c945c0efddd1a0570a4959af
      https://github.com/dovecot/core/commit/8b478435d7a697c1c945c0efddd1a0570a4959af
  Author: Martti Rannanjärvi <martti.rannanjarvi at dovecot.fi>
  Date:   2017-11-15 (Wed, 15 Nov 2017)

  Changed paths:
    M src/lib-master/master-service-ssl-settings.c

  Log Message:
  -----------
  lib-master: Drop support for SSL_TXT_SSLV2 in master-service-ssl-settings.c

OpenSSL headers are not included in master-service-ssl-settings.c, so
the check for SSL_TXT_SSLV2 is broken at the moment, and the feature is
not worth supporting since SSLv2 is obsolete.


Compare: https://github.com/dovecot/core/compare/a0876e2befd7...8b478435d7a6