download task output directly from KojiFilesURL, rather than going through getfile

www/kojiweb/index.py

@@ -605,7 +605,10 @@ def taskinfo(req, taskID):
         values['perms'] = server.getUserPerms(req.currentUser['id'])
     else:
         values['perms'] = []
-    
+
+    topurl = req.get_options().get('KojiFilesURL', 'http://localhost/')
+    values['pathinfo'] = koji.PathInfo(topdir=topurl)
+
     return _genHTML(req, 'taskinfo.chtml')
 
 def imageinfo(req, imageID):

www/kojiweb/taskinfo.chtml

@@ -366,7 +366,7 @@ ${excClass.__name__}: $cgi.escape($str($result))
       <th>Output</th>
       <td>
         #for $filename in $output
-        <a href="getfile?taskID=$task.id&name=$urllib.quote($filename)">$filename</a>
+        <a href="$pathinfo.task($task.id)/$urllib.quote($filename)">$filename</a>
            #if $filename.endswith('.log')
            (<a href="getfile?taskID=$task.id&name=$urllib.quote($filename)&offset=-4000">tail</a>)
            #end if