postsrsd-1.12-bp155.1.7

- Update to release 1.12
  * Explicitly clear O_NONBLOCK to avoid inherited non-blocking
    sockets on some operating systems
  * Do not close all file descriptors up to _SC_MAX_OPEN, that
    limit can be absurdly high and hang PostSRSd for minutes

- Update to release 1.11 [boo#1180251]
  * Drop group privileges as well as user privileges
  * Fixed: The subprocess that talks to Postfix could be caused
    to hang with a very long email address. [CVE-2020-35573]

- Update to release 1.6
  * Fix endianness issue with SHA-1 implementation
  * Add dual stack support
  * Make SRS separator configurable