Add checkstyle config file for run correctly the plugin release process.

git-svn-id: https://svn.apache.org/repos/asf/maven/maven-1/plugins/trunk@115737 13f79535-47bb-0310-9956-ffa450edef68

plugin-parent/maven.xml

@@ -30,6 +30,8 @@
     <ant:copy todir="${dir}/maven-plugins/plugin-parent" file="${pom.parent.file.parent}/project.properties" />
     <ant:copy todir="${dir}/maven-plugins" file="${pom.parent.file.parent}/../LICENSE.txt" />
     <ant:copy todir="${dir}/maven-plugins" file="${pom.parent.file.parent}/../NOTICE.txt" />
+    <ant:copy todir="${dir}/maven-plugins" file="${pom.parent.file.parent}/../checkstyle.xml" />
+    <ant:copy todir="${dir}/maven-plugins" file="${pom.parent.file.parent}/../checkstyle-license.txt" />
   </postGoal>
 
 </project>