add flatten mapper to docs for copying into WEB-INF

git-svn-id: https://svn.apache.org/repos/asf/maven/components/trunk@320954 13f79535-47bb-0310-9956-ffa450edef68

maven-artifact-ant/sample.build.xml

@@ -102,6 +102,11 @@
       <fileset refid="my.compile.dependency.fileset"/>
     </copy>
 
+    <copy todir="target/my-compile-dependencies/WEB-INF/lib">
+      <fileset refid="my.compile.dependency.fileset"/>
+      <mapper type="flatten" />
+    </copy>
+
     <antcall target="test-deploy" />
 
     <antcall target="test-legacy-pom" />

maven-site/src/site/apt/ant-tasks.apt

@@ -102,6 +102,7 @@ Using the Antlib
 -----
 <copy todir="${webapp.output}/WEB-INF/lib">
   <fileset refid="depdendency.fileset" />
+  <mapper type="flatten" />
 </copy>
 -----