Add a little more logging info to build inverted index, a=chris

diff --git a/src/library/IndexDocumentBundle.php b/src/library/IndexDocumentBundle.php
index c52e72bc9..7b2183c08 100644
--- a/src/library/IndexDocumentBundle.php
+++ b/src/library/IndexDocumentBundle.php
@@ -705,7 +705,8 @@ class IndexDocumentBundle implements CrawlConstants
                 $site[self::TYPE] == "link") ? "LINK TO:" : "";
             $time_string = makeTimestamp();
             if ($site_url &&
-                crawlTimeoutLog("..Indexer Still building inverted index. \n" .
+                crawlTimeoutLog("..Indexer Still building inverted index ".
+                    "for partition $partition \n" .
                     "$time_string ....Current Indexer Memory Usage is %s.\n" .
                     $time_string .
                     " ....Indexer has processed %s of %s documents.\n" .