added support for the eclipse output directory to be configurable from a user defined property

git-svn-id: https://svn.apache.org/repos/asf/maven/maven-1/plugins/trunk@113055 13f79535-47bb-0310-9956-ffa450edef68

eclipse/xdocs/properties.xml

@@ -38,6 +38,16 @@
 			build classpath.
           </td>
         </tr>
+        <tr>
+          <td>maven.eclipse.output.dir</td>
+          <td>Yes (default=target/classes)</td>
+          <td>
+			The directory to which Eclipse should output its classes.
+			By default this is the same directory as Maven generates its code
+			however this can be changed so that <code>maven clean</code>
+			does not interfere with Eclipse's build.
+          </td>
+        </tr>
       </table>
 	  <p>
 		Note that you will need to defined a <code>MAVEN_REPO</code> Java