Log Message:
fetchmail: Update to 6.4.19

upstream changes:
-----------------
fetchmail-6.4.19 (released 2021-04-24, 30026 LoC):

# CHANGE:
* fetchmailconf: properly catch and report option parsing errors

# BUG FIX:
* LMTP: do not try to validate the last component of a UNIX-domain LMTP socket
  as though it were a TCP port.  Reported by Christoph Heitkamp, Gitlab issue #33.

# TRANSLATION UPDATE:
  This fine person has contributed an updated translation:
* sr:    Мирослав Николић (Miroslav Nikolić) [Serbian]

--------------------------------------------------------------------------------
fetchmail-6.4.18 (released 2021-03-27, 30011 LoC):

# REGRESSION FIX:
* fetchmailconf: fetchmail 6.4.16 added --sslcertfile to the configuration dump,
  but fetchmailconf support was incomplete in Git 7349f124 and it could not
  parse sslcertfile, thus the user settings editor came up empty with console
  errors printed.  Fix configuration parser in fetchmailconf.

# ROBUSTNESS FIXES:
* fetchmailconf: do not require fetchmail for -V. do not require Tk (Tkinter)
  for -d option. This is to fail more gracefully on incomplete installs.
* TLS code: remove OPENSSL_NO_DEPRECATED macros to avoid portability issues
  with OpenSSL v3 - these are for development purposes, not production.
* TLS futureproofing: use SSL_use_PrivateKey_file instead of
  SSL_use_RSAPrivateKey_file, the latter will be deprecated with OpenSSL v3,
  and the user's key file might be something else than RSA.

# TRANSLATION UPDATE:
  This fine person has contributed an updated translation:
* fi:    Lauri Nurmi [Finnish]

--------------------------------------------------------------------------------
fetchmail-6.4.17 (released 2021-03-07, 29998 LoC):

# BUG FIXES
* IMAP client: it used to leak memory for username and password when trying
  the LOGIN (password-based) authentication and encountered a timeout situation.
* dist-tools/getstats.py: also counts lines in *.py files, shown above.

# CHANGES
* fetchmail.man: now mentions that you may need to add --ssl when specifying
  a TLS-wrapped port.
* fetchmailconf: --version (-V) now prints the Python version in use.

# TRANSLATION UPDATE:
  This fine person has contributed an updated translation:
* ja:    Takeshi Hamasaki [Japanese]

--------------------------------------------------------------------------------
fetchmail-6.4.16 (released 2021-02-08, 27707 LoC):

# BUG FIXES
* fetchmail's --configdump, and fetchmailconf, lacked support for the
  sslcertfile option. --configdump support added by Earl Chew,
  Gitlab issue #25, merge request !28.
* fetchmail's manual page was never updated to reflect 6.2.5's change about the
  duplicate-killer code for multidrop mode, which read
  "* Dup-killer code now keys on an MD5 hash of the raw headers."
  ...instead of just the Message-ID. [commit 9dd8400, 2003-10-10 by esr]
  The manual page was now updated accordingly and documents
  historic behaviour:
  start to 5.0.7 no duplicate suppression;
  5.0.8 to 6.2.4 duplicate suppression only by Message-ID;
  6.2.5 to 6.4.X duplicate suppression by entire raw header.
  Manpage bug found by Julian Bane debugging "duplicate message" behaviour.
* ./configure no longer runs AC_LIB_LINKFLAGS (how to link) checks
  when called --without-ssl

# FEATURES
* fetchmail --version [fetchmail -V] now queries and prints the SSL/TLS
  library's "SSL default trusted certificate" file or directory (mind \ 
the word
  "default"), where the OpenSSL-compatible TLS implementation will look for
  trusted root, meaning certification authority (CA), certificates.
  NOTE 1: watch the output carefully if the line prints the defaults
  or the configured path (without "default").
  NOTE 2: SSL_CERT_DIR and SSL_CERT_FILE are documented environment variables
  for OpenSSL 1.1.1 to override the *default* locations (those compiled into
  OpenSSL or possibly in its configuration file).
  This was added when Gene Heskett was debugging his setup and the
  information "where does OpenSSL look" was missing.
* fetchmail --version now prints version of the OpenSSL library that
  it was compiled against, and that it is using at runtime, and also
  the OPENSSL_DIR and OPENSSL_ENGINES_DIR (if available).

# TRANSLATION UPDATES
  These fine people have contributed updated translations for fetchmail,
  in no particular order:
* sq:    Besnik Bleta [Albanian]
* eo:    Keith Bowes [Esperanto]
* cs:    Petr Pisar [Czech]
* pl:    Jakub Bogusz [Polish]
* sv:    Göran Uddeborg [Swedish]
* fr:    Frédéric Marchal [French]