Log Message:
textproc/docbook2mdoc: Update to version 1.1.0 (from wip)

Adjust patch to new version.
Remove expat bl3, upstream dropped the expat dependency
by rewriting the code.

ChangeLog:

    Changes in version 1.1.0, released on May 2, 2019

       --- NEW PARSER FEATURES ---
     * Handle <funcparams> inside <paramdef> inside \ 
<funcprototype>.
     * Ignore <jobtitle> and <orgdiv> elements.
       --- NEW FORMATTER FEATURES --
     * Write a comment "automatically generated" at the beginning.
     * Provide an -s command line option to override the section in .Dt.
     * Large numbers of improvements to horizontal and vertical whitespace.
     * End of sentence detection: new sentence, new line.
     * Drop trailing parentheses in <function> elements.
     * Print commas between Copyright years.

    Changes in version 1.0.2, released on April 29, 2019

       --- NEW PARSER FEATURES ---
     * Handle <abstract>: better formatting of many non-<refentry> \ 
documents.
     * Handle <reference> like <section>.
     * Explicitly ignore <keycombo>.
       --- STRUCTURAL IMPROVEMENTS ---
     * Start a new module reorg.c, to edit and move around nodes.
     * Provide a new function pnode_alloc_text() to generate a text node.
     * Introduce an xmalloc.c module to automatically exit when out of memory.

    Changes in version 1.0.1, released on April 24, 2019

       --- NEW PARSER FEATURES ---
     * Handle file inclusion via "<!ENTITY %".
     * Translate decimal character entities to Unicode escapes.
     * Handle <tag> like <sgmltag> and <markup>.
       --- RELIABILITY BUGFIX ---
     * Do not crash when an ignored element contains an attribute.
       --- FORMATTING IMPROVEMENTS ---
     * Correctly translate input to output line breaks in no-fill elements.
     * Improve spacing of text nodes inside macro arguments.
     * Better handle <void> as a child of <funcprototype>.
     * Better handle <info> as a child of <refentry>.
     * Correct delimiter spacing between <term> elements.
     * Insert a paragraph break after displays and after non-compact lists.
       --- THANKS TO ---
     * Stephen Gregoratto for a small patch and two bug reports.
     * Jan Stary for a bug report.