Move the code that clears the upgrade_check site status message to the

upgrader so that it's cleared any time we run an upgrade.  Part of

modules/gallery/controllers/upgrader.php

@@ -94,6 +94,9 @@ class Upgrader_Controller extends Controller {
     // If the upgrade failed, this will get recreated
     site_status::clear("upgrade_now");
 
+    // Clear any upgrade check strings, we are probably up to date.
+    site_status::clear("upgrade_check");
+
     if (php_sapi_name() == "cli") {
       if ($failed) {
         print "Upgrade completed ** WITH FAILURES **\n";