incorporate niceness for low priority jobs
diff --git a/releng.control/cc_copyArtifacts.xml b/releng.control/cc_copyArtifacts.xml
index 9726b91..1775f62 100644
--- a/releng.control/cc_copyArtifacts.xml
+++ b/releng.control/cc_copyArtifacts.xml
@@ -2,24 +2,22 @@
     name="cc_copyArtifacts"
     default="copyArtifacts"
     basedir=".">
-
-
-	<!-- = = = standard properties pattern = = = -->
-	<!-- 
-    Note to be cross-platform, "environment variables" are only appropriate for 
-      some variables, e.g. ones we set, since properties are case sensitive, even if 
-      the environment variables on your operating system are not, e.g. it will 
-      be ${env.Path} not ${env.PATH} on Windows -->
+    <!--
+        Standard properties pattern. Note: to be cross-platform,
+        "environment variables" are only appropriate for some variables,
+        e.g. ones we set, since properties are case sensitive, even if
+        the environment variables on your operating system are not, e.g.
+        it will be ${env.Path} not ${env.PATH} on Windows
+    -->
     <property
-        environment="env" />
-
-	<!-- 
-    Let users override standard properties, if desired.
-    If directory, file, or some properties do not exist,  
-    then standard properties will be used.
-   -->
+        environment="env"/>
+    <!--
+        Let users override standard properties, if desired. If
+        directory, file, or some properties do not exist, then standard
+        properties will be used.
+    -->
     <property
-        file="${env.LOCAL_BUILD_PROPERTIES_DIR}/${ant.project.name}.properties" />
+        file="${env.LOCAL_BUILD_PROPERTIES_DIR}/${ant.project.name}.properties"/>
 
 	<!-- = = = end standard properties pattern = = = -->
     <target
@@ -27,44 +25,44 @@
         depends="init"
         if="buildLabel">
         <mkdir
-            dir="${localStampedArtifactsDirectory}" />
+            dir="${localStampedArtifactsDirectory}"/>
         <mkdir
-            dir="${localStampedArtifactsDirectory}/${buildLabel}" />
+            dir="${localStampedArtifactsDirectory}/${buildLabel}"/>
         <copy
             todir="${localStampedArtifactsDirectory}/${buildLabel}"
             overwrite="true"
             failonerror="false">
             <fileset
-                dir="${env.PROJECT_PROJECTS}/${projectname}/workdir/${buildLabel}" />
+                dir="${env.PROJECT_PROJECTS}/${projectname}/workdir/${buildLabel}"/>
             <fileset
-                file="${env.ANT_WORKING}/${projectname}/antBuilderOutput.log" />
+                file="${env.ANT_WORKING}/${projectname}/antBuilderOutput.log"/>
         </copy>
     </target>
     <target
         name="init">
         <fail
-            unless="env.PROJECT_PROJECTS" />
+            unless="env.PROJECT_PROJECTS"/>
         <fail
-            unless="projectname" />
+            unless="projectname"/>
         <property
             name="labelfile"
-            value="${env.PROJECT_PROJECTS}/${projectname}/workdir/label.properties" />
+            value="${env.PROJECT_PROJECTS}/${projectname}/workdir/label.properties"/>
         <available
             file="${labelfile}"
-            property="labelfileavailable" />
+            property="labelfileavailable"/>
         <fail
-            unless="labelfileavailable" />
+            unless="labelfileavailable"/>
         <property
-            file="${labelfile}" />
+            file="${labelfile}"/>
         <property
             name="localStampedArtifactsDirectory"
-            value="${localArtifactsDirectory}/${cctimestamp}" />
+            value="${localArtifactsDirectory}/${cctimestamp}"/>
         <fail
             message="Build probably failed early. Found nothing to copy at ${env.PROJECT_PROJECTS}/${projectname}/workdir/${buildLabel}">
             <condition>
                 <not>
                     <available
-                        file="${env.PROJECT_PROJECTS}/${projectname}/workdir/${buildLabel}" />
+                        file="${env.PROJECT_PROJECTS}/${projectname}/workdir/${buildLabel}"/>
                 </not>
             </condition>
         </fail>