$wgMemc = wfGetMainCache();
$messageMemc = wfGetMessageCacheStorage();
$parserMemc = wfGetParserCacheStorage();
-$wgLangConvMemc = wfGetLangConverterCacheStorage();
wfDebugLog( 'caches', 'main: ' . get_class( $wgMemc ) .
', message: ' . get_class( $messageMemc ) .