Fixed #3835 Delete MailBackup not working - Log shows a warning about SQL I...

Till Brehm

2016-04-20 86853d4d0fd66c277746e9e0cf07fbecbfbbc362

 install/lib/install.lib.php

@@ -86,6 +86,12 @@
         $mainver = array_filter($mainver);
         $mainver = current($mainver).'.'.next($mainver);
         switch ($mainver){
         case "15.10":
            $relname = "(Wily Werewolf)";
            break;
         case "15.04":
            $relname = "(Vivid Vervet)";
            break;
         case "14.10":
            $relname = "(Utopic Unicorn)";
            break;