Trying again to skip unwanted PHPMD checks.

build.xml

@@ -52,7 +52,7 @@
 
   <!-- Report rule violations with PHPMD (mess detector) -->
   <target name="phpmd">
-    <exec command="phpmd ${srcdir}/module xml ${srcdir}/tests/phpmd.xml --exclude ${srcdir}/module/*/tests --reportfile ${builddir}/reports/phpmd.xml" />
+    <exec command="phpmd ${srcdir}/module xml ${srcdir}/tests/phpmd.xml --exclude ${srcdir}/module/VuFind/tests,${srcdir}/module/VuFindSearch/tests --reportfile ${builddir}/reports/phpmd.xml" />
   </target>
 
   <!-- Measure project with phploc -->