Merge branch 'ma/asciidoctor-build-fixes'

A topic to optionally build with meson, which has graduated to
'master' recently, broke Documentation pipeline with asciidoctor
for the normal Makefile build as well as meson-based one, which
have been corrected.

* ma/asciidoctor-build-fixes:
  asciidoctor-extensions.rb.in: inject GIT_DATE
  asciidoctor-extensions.rb.in: add missing word
  asciidoctor-extensions.rb.in: delete existing <refmiscinfo/>

Documentation/asciidoctor-extensions.rb.in

@@ -29,8 +29,11 @@ module Git
     class DocumentPostProcessor < Asciidoctor::Extensions::Postprocessor
       def process document, output
         if document.basebackend? 'docbook'
+          output = output.sub(/<refmiscinfo class="source">.*?<\/refmiscinfo>/, "")
+          output = output.sub(/<refmiscinfo class="manual">.*?<\/refmiscinfo>/, "")
+          output = output.sub(/<date>.*?<\/date>/, "<date>@GIT_DATE@</date>")
           new_tags = "" \
-            "<refmiscinfo class=\"source\">@GIT_VERSION@</refmiscinfo>\n" \
+            "<refmiscinfo class=\"source\">Git @GIT_VERSION@</refmiscinfo>\n" \
             "<refmiscinfo class=\"manual\">Git Manual</refmiscinfo>\n"
           output = output.sub(/<\/refmeta>/, new_tags + "</refmeta>")
         end