Update to 1.3.6a
    
    - New upstream release 1.3.6a
      - Configure script wrongly detected AIX lastlog functions
        (http://bugs.proftpd.org/show_bug.cgi?id=4304)
      - AllowChrootSymlinks off could cause login failures depending on filesystem
        permissions (http://bugs.proftpd.org/show_bug.cgi?id=4306)
      - mod_ctrls: error: unable to bind to local socket: Address already in use
        (https://github.com/proftpd/proftpd/issues/501)
      - Failed to handle multiple %{env:...} variables in single word in
        configuration (https://github.com/proftpd/proftpd/issues/507)
      - mod_sftp failed to check shadow password information when publickey
        authentication used (http://bugs.proftpd.org/show_bug.cgi?id=4308)
      - Use of "AllowEmptyPasswords off" broke SFTP/SCP logins
        (http://bugs.proftpd.org/show_bug.cgi?id=4309)
      - Use of mod_facl as static module caused ProFTPD to die on SIGHUP/restart
        (http://bugs.proftpd.org/show_bug.cgi?id=4310)
      - Use of curve25519-sha256@libssh.org SSH2 key exchange sometimes failed
        (https://github.com/proftpd/proftpd/issues/556)
      - Close extra file descriptors at startup
        (http://bugs.proftpd.org/show_bug.cgi?id=4312)
      - <Anonymous> with AuthAliasOnly in effect did not work as expected
        (http://bugs.proftpd.org/show_bug.cgi?id=4314)
      - CreateHome NoRootPrivs only worked partially
        (https://github.com/proftpd/proftpd/issues/568)
      - SFTP OPEN response included attribute flags that are not actually provided
        (https://github.com/proftpd/proftpd/issues/578)
      - Truncation of file while being downloaded with sendfile enabled caused
        timeouts due to infinite loop (http://bugs.proftpd.org/show_bug.cgi?id=4318)
      - FTP uploads frequently broke due to "Interrupted system call" error
        (http://bugs.proftpd.org/show_bug.cgi?id=4319)
      - Site-to-site transfers over TLS failed
        (https://github.com/proftpd/proftpd/issues/618)
      - Can't see symlinks using any FTP client when using MLSD
        (http://bugs.proftpd.org/show_bug.cgi?id=4322)
      - mod_tls 1.3.6 failed to compile using OpenSSL 0.9.8e
        (http://bugs.proftpd.org/show_bug.cgi?id=4325)
      - Using MaxClientsPerHost 1 in <Anonymous> section denied logins
        (http://bugs.proftpd.org/show_bug.cgi?id=4326)
      - SQLNamedConnectInfo with different backend database did not work properly
        (https://github.com/proftpd/proftpd/issues/642)
      - Segfault with mod_sftp+mod_sftp_pam after successful authentication using
        keyboard-interactive method (https://github.com/proftpd/proftpd/issues/656)
      - autoconf always failed to detect support for FIPS
        (https://github.com/proftpd/proftpd/issues/660)
      - SFTP connections failed when using "arcfour256" cipher
        (https://github.com/proftpd/proftpd/issues/663)
      - mod_auth_otp failed to build with OpenSSL 1.1.x
        (http://bugs.proftpd.org/show_bug.cgi?id=4335)
      - scp broken on FreeBSD 11 (http://bugs.proftpd.org/show_bug.cgi?id=4341)
      - Update mod_sftp to handle changed APIs in OpenSSL 1.1.x releases
        (https://github.com/proftpd/proftpd/issues/674)
      - Infinite loop possible in mod_sftp's set_sftphostkey() function
        (http://bugs.proftpd.org/show_bug.cgi?id=4356)
      - Some ASCII text files corrupted when downloading
        (http://bugs.proftpd.org/show_bug.cgi?id=4352)
      - Properly use the --includedir, --libdir configure variables in the
        generated proftpd.pc pkgconfig file
        (https://github.com/proftpd/proftpd/issues/797)
      - Reading invalid SSH key from database resulted in unexpected/unlogged
        disconnect failures (http://bugs.proftpd.org/show_bug.cgi?id=4350)
      - Symlink navigation broken after 1.3.6 update
        (http://bugs.proftpd.org/show_bug.cgi?id=4332)
      - Unable to connect to ProFTPD using TLSSessionTickets and TLSv1.3
        (https://github.com/proftpd/proftpd/issues/795)
      - SITE CPFR/CPTO did not honor <Limit> configurations
        (http://bugs.proftpd.org/show_bug.cgi?id=4372)
      - Using "TLSProtocol SSLv23" did not enable all protocol versions
        (https://github.com/proftpd/proftpd/issues/807)