Hydra/57: Unknown failure -> Failed

Dependencies

• [2] FHAVPTZ6 Hydra/23: added some X-headers with meta info in email notifications, added more descriptive status
• [3] OG7BEM57
• [4] CXRCPDSQ * added support for twitter notification
• [*] 7YBYT2LQ

Change contents

• replacement in src/script/hydra_build.pl.in at line 62
  [2.66]→[2.66:102](∅→∅)
  − my $status = "Unknown failure";
  [2.66]

  [2.102]
  + my $status = "Failed";