[HUDSON-3251] 'mvn -f main/war/pom.xml' failed to load maven-plugin due to CWD issue.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@16740 71c3de6d-444a-0410-be80-ed276b4c234a

war/pom.xml

@@ -161,7 +161,7 @@ THE SOFTWARE.
             <systemProperty>
               <!-- enable the maven plugin by default -->
               <name>hudson.bundled.plugins</name>
-              <value>../maven-plugin/target/test-classes/the.hpl</value>
+              <value>${basedir}/../maven-plugin/target/test-classes/the.hpl</value>
             </systemProperty>
           </systemProperties>
         </configuration>