Modify the expected outcome of test 012 so that it passes when bibtex is
not in the path, as we do not wish to add texlive as an input just for this
test.

diff -u -r doxygen-1.8.7.orig/testing/012/citelist.xml doxygen-1.8.7/testing/012/citelist.xml
--- doxygen-1.8.7.orig/testing/012/citelist.xml	2014-04-24 23:43:34.000000000 +0200
+++ doxygen-1.8.7/testing/012/citelist.xml	2014-04-24 23:49:43.000000000 +0200
@@ -6,38 +6,6 @@
     <briefdescription>
     </briefdescription>
     <detaileddescription>
-      <para>
-        <variablelist>
-          <varlistentry>
-            <term><anchor id="citelist_1CITEREF_Be09"/>[1]</term>
-          </varlistentry>
-          <listitem>
-            <para>P.<nonbreakablespace/>Belotti. <ulink url="http://doi.org/10.1007/978-1-4614-1927-3_5">Disjunctive cuts for non-convex MINLP</ulink>. In <ulink url="#CITEREF_LeLe12">Lee and Leyffer</ulink> <ulink url="#CITEREF_LeLe12">[4]</ulink>, pages 117<ndash/>144.</para>
-            <para/>
-          </listitem>
-          <varlistentry>
-            <term><anchor id="citelist_1CITEREF_BertholdHeinzVigerske2009"/>[2]</term>
-          </varlistentry>
-          <listitem>
-            <para>T.<nonbreakablespace/>Berthold, S.<nonbreakablespace/>Heinz, and S.<nonbreakablespace/>Vigerske. <ulink url="http://doi.org/10.1007/978-1-4614-1927-3_15">Extending a CIP framework to solve MIQCPs</ulink>. In <ulink url="#CITEREF_LeLe12">Lee and Leyffer</ulink> <ulink url="#CITEREF_LeLe12">[4]</ulink>, pages 427<ndash/>444.</para>
-            <para/>
-          </listitem>
-          <varlistentry>
-            <term><anchor id="citelist_1CITEREF_knuth79"/>[3]</term>
-          </varlistentry>
-          <listitem>
-            <para>Donald<nonbreakablespace/>E. Knuth. <emphasis>Tex and Metafont, New Directions in Typesetting</emphasis>. American Mathematical Society and Digital Press, Stanford, 1979.</para>
-            <para/>
-          </listitem>
-          <varlistentry>
-            <term><anchor id="citelist_1CITEREF_LeLe12"/>[4]</term>
-          </varlistentry>
-          <listitem>
-            <para>Jon Lee and Sven Leyffer, editors. <ulink url="http://doi.org/10.1007/978-1-4614-1927-3"><emphasis>Mixed Integer Nonlinear Programming</emphasis></ulink>, volume 154 of <emphasis>The IMA Volumes in Mathematics and its Applications</emphasis>. Springer, 2012.</para>
-            <para/>
-          </listitem>
-        </variablelist>
-      </para>
     </detaileddescription>
   </compounddef>
 </doxygen>
diff -u -r doxygen-1.8.7.orig/testing/012/indexpage.xml doxygen-1.8.7/testing/012/indexpage.xml
--- doxygen-1.8.7.orig/testing/012/indexpage.xml	2014-04-24 23:43:34.000000000 +0200
+++ doxygen-1.8.7/testing/012/indexpage.xml	2014-04-24 23:44:05.000000000 +0200
@@ -6,8 +6,8 @@
     <briefdescription>
     </briefdescription>
     <detaileddescription>
-      <para>See <ref refid="citelist_1CITEREF_knuth79" kindref="member">[3]</ref> for more info.</para>
-      <para>Other references with cross references see <ref refid="citelist_1CITEREF_Be09" kindref="member">[1]</ref> and <ref refid="citelist_1CITEREF_BertholdHeinzVigerske2009" kindref="member">[2]</ref> for more info. </para>
+      <para>See knuth79 for more info.</para>
+      <para>Other references with cross references see Be09 and BertholdHeinzVigerske2009 for more info. </para>
     </detaileddescription>
   </compounddef>
 </doxygen>
 Set 'PATH' for 'updatedb'.</a><span class='msg-avail'>...<span class='msg-tooltip'>Previously 'updatedb' would fail to find 'sed', 'rm', etc.

* gnu/services/admin.scm (file-database-mcron-jobs): Set PATH before
invoking 'updatedb'.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2023-08-07 15:11:45 +0200'>2023-08-07</span></td><td><a href='/guix/commit/gnu/services/admin.scm?id=b3a2b3e7238161ebd86c7609f68e8f1e9c1dd6b7'>services: Add 'package-database' service.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/admin.scm (%default-package-database-update-schedule):
New variable.
(&lt;package-database-configuration&gt;): New record type.
(package-database-mcron-jobs): New procedure.
(package-database-service-type): New variable.
* doc/guix.texi (File Search Services): Document it.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2023-08-07 15:11:44 +0200'>2023-08-07</span></td><td><a href='/guix/commit/gnu/services/admin.scm?id=e63c87020d10f90d5461cec2b7f83f5d20773603'>services: Add 'file-database' service.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/admin.scm (%default-file-database-update-schedule)
(%default-file-database-excluded-directories): New variables.
(&lt;file-database-configuration&gt;): New record type.
(file-database-mcron-jobs): New procedure.
(file-database-service-type): New variable.
* doc/guix.texi (File Search Services): New node.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2023-01-10 11:49:14 +0100'>2023-01-10</span></td><td><a href='/guix/commit/gnu/services/admin.scm?id=5f63811032dab5c04c397e043cc7290cb3d51ee0'>services: unattended-upgrade: Add 'operating-system-expression' field.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/admin.scm (&lt;unattended-upgrade-configuration&gt;)
[operating-system-expression]: New field.
(unattended-upgrade-mcron-jobs): Honor it.
* doc/guix.texi (Unattended Upgrades): Document it.

Co-authored-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Giacomo Leidi</td></tr>