List the thread config value in lib/default.php

lib/default.php

@@ -98,6 +98,7 @@ $default =
         'queue' =>
         array('enabled' => true,
               'daemon' => false, # Use queuedaemon. Default to false
+              'threads' => null,    # an empty value here uses processor count to determine
               'subsystem' => 'db', # default to database, or 'stomp'
               'stomp_server' => null,
               'queue_basename' => '/queue/statusnet/',

scripts/queuedaemon.php

@@ -176,6 +176,8 @@ if (!$threads) {
     $threads = getProcessorCount();
 }
 
+common_log(LOG_INFO, sprintf('Launching QueueDaemon background process with %1$d threads.', $threads));
+
 $daemonize = !(have_option('f') || have_option('--foreground'));
 $all = have_option('a') || have_option('--all');