news/flnews: Update to 0.17

Removed pkgsrc patches merged upstream.

Changelog
=========

0.17      Bugfix: Configuration test result for inttypes.h presence is used,
            reintroduce the test removed for 0.16
          Bugfix: BSD version of ntohl() for old systems was broken
          Bugfix: ISO-2022-JP decoder: Mask for unassigned codepoints fixed
          Bugfix: SHA2 support in OpenSSL 1.0.0 must be explicitly enabled
          Display article from "news" type URI in separate window (if it's not
            found in current group)
          Clickable References added (articles displayed in separate window)
          Search for Message-ID added to the Tools menu (Keyboard shortcut
            is Ctrl-s)
          Previous read article (in current group) menu entry added
          Keyboard shortcut for "Quit" changed from Ctrl-x to Ctrl-q (Proposed
            by Marcel Logen)
          Keyboard shortcut for "View source" changed from Ctrl-v to Ctrl-e
            (Proposed by Marcel Logen)
          Menu entry "Article->Mark as unread" (Ctrl-u) changed to toggle
            between read and unread state (Proposed by Marcel Logen)
          Command line option "-4" added (force usage of IPv4 network protocol)
          Flowed format: The 'flowed_insert_crlf' entry in configfile adds an
            empty line separator after every paragraph that ends with an empty
            line. Defaults to 0 (former behaviour)
          Flowed format: The behaviour of 'flowed_insert_crlf' can be requested
            by the sender of an article with "InsLine=yes" in the Content-Type
            headerfield.
          TLS module can now use OpenSSL 3 API (required for FFDHE group
            negotiation with TLSv1.2 and TLSv1.3 protocols)
          TLS module can now use LibreSSL 3 (formerly major version 2 was used
            to identify LibreSSL and distinguish it from OpenSSL)
          TLS modules compile time option 'CFG_USE_TLS_OWNCERTS' replaced by
            the new 'tls_owncerts' entry in configfile
          TLS modules experimental compile time option 'CFG_USE_TLS_CRLS'
            replaced by normal option 'CFG_TLS_CRLS_DISABLE'. Default is to use
            no CRLs (former behaviour) because this option increases the system
            requirements (to POSIX.1-2001 or XSI extension)
          TLS module now supports new 'crl_check' entry in configfile (ignored
            if CFG_TLS_CRLS_DISABLE is nonzero)
          TLS module now prints real LibreSSL version instead of generic 2.0.0
          TLS module no longer supports options 'CFG_USE_TLS_DHPARAM_CHECK' and
            'CFG_USE_TLS_SETSIGALG'. They were obsoleted by the OpenSSL 1.1 API
          Unicode database updated to version 12.1.0
          GUI module no longer supports experimental FLTK 1.3 option
            'USE_X11_GLYPH_SUBSTITUTION'. It was obsoleted by FLTK 1.4
          Modified LaTeX documentation to work with recent doxygen

(micha)