Merge branch '0.9.x' into 1.0.x

Conflicts:
	actions/confirmaddress.php
	actions/emailsettings.php
	actions/hostmeta.php
	actions/imsettings.php
	actions/login.php
	actions/profilesettings.php
	actions/showgroup.php
	actions/smssettings.php
	actions/urlsettings.php
	actions/userauthorization.php
	actions/userdesignsettings.php
	classes/Memcached_DataObject.php
	index.php
	lib/accountsettingsaction.php
	lib/action.php
	lib/common.php
	lib/connectsettingsaction.php
	lib/designsettings.php
	lib/personalgroupnav.php
	lib/profileaction.php
	lib/userprofile.php
	plugins/ClientSideShorten/ClientSideShortenPlugin.php
	plugins/Facebook/FBConnectSettings.php
	plugins/Facebook/FacebookPlugin.php
	plugins/NewMenu/NewMenuPlugin.php
	plugins/NewMenu/newmenu.css

lib/default.php

@@ -39,6 +39,8 @@ $default =
               'logo' => null,
               'ssllogo' => null,
               'logdebug' => false,
+              'logperf' => false, // Enable to dump performance counters to syslog
+              'logperf_detail' => false, // Enable to dump every counter hit
               'fancy' => false,
               'locale_path' => INSTALLDIR.'/locale',
               'language' => 'en',
@@ -270,8 +272,9 @@ $default =
         'search' =>
         array('type' => 'fulltext'),
         'sessions' =>
-        array('handle' => false, // whether to handle sessions ourselves
-              'debug' => false), // debugging output for sessions
+        array('handle' => false,   // whether to handle sessions ourselves
+              'debug' => false,    // debugging output for sessions
+              'gc_limit' => 1000), // max sessions to expire at a time
         'design' =>
         array('backgroundcolor' => null, // null -> 'use theme default'
               'contentcolor' => null,
@@ -304,6 +307,10 @@ $default =
                                  'StrictTransportSecurity' => null,
                                  'OpenID' => null),
               'locale_path' => false, // Set to a path to use *instead of* each plugin's own locale subdirectories
+              'server' => null,
+              'sslserver' => null,
+              'path' => null,
+              'sslpath' => null,
               ),
         'pluginlist' => array(),
         'admin' =>