Flush L1 session between iterations

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@3620 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/repo/admin/patch/impl/UniqueChildNamePatch.java

@@ -216,6 +216,9 @@ public class UniqueChildNamePatch extends AbstractPatch
                             writeLine("     Replaced with:  " + usedChildName);
                         }
                     }
+                    // clear the session to preserve memory
+                    getSession().flush();
+                    getSession().clear();
                 }
             }