tweeks to tests

releng.control/cc.sh

@@ -59,6 +59,6 @@ echo "    BASEARCH: ${BASEARCH}"
 echo
 echo "    LOCAL_BUILD_PROPERTIES_DIR: ${LOCAL_BUILD_PROPERTIES_DIR}"
 echo
-echo "    remember to check that X virtual frame buffer is running for headless JUnit testing";
+echo "    remember to check that X virtual frame buffer is running for display :$DISPLAYNUMBER for headless unit tests";
 ps -ef | grep Xvfb
 echo