Use recent releases of dependencies to allow developers to use them in plugins :

* commons-logging v1.0.3 -> v1.0.4
* log4j v1.2.8 -> v1.2.12

git-svn-id: https://svn.apache.org/repos/asf/maven/maven-1/plugins/trunk@321081 13f79535-47bb-0310-9956-ffa450edef68

plugin/xdocs/changes.xml

@@ -27,6 +27,7 @@
       <action dev="aheritier" type="update" issue="MAVEN-1712">Update dependencies to match ones in maven 1.1 core and to unify them between plugins. The following dependencies are updated : 
         <ul>
           <li>commons-jelly-tags-xml v1.0 -> v1.1</li>
+          <li>commons-logging v1.0.3 -> v1.0.4</li>
           <li>jdom v b10 -> v1.0</li>
           <li>xercesImpl v 2.4.0 -> v2.6.2</li>
           <li>xml-apis v 1.0.b2 -> xmlParserAPIs v2.6.2</li>