Include # of failed builds in Subject

Dependencies

• [2] E6SL7QRU Omit the system type if it's part of the job name
• [3] QDJRQIFF If multiple dependent builds fail, send a single email
• [4] 5EQYVRWE Add a plugin mechanism
• [5] LDICTHWY Use Template::Toolkit to generate email messages

Change contents

• replacement in src/lib/Hydra/Plugin/EmailNotification.pm at line 150
  [3.5709]→[2.384:525](∅→∅)
  − Subject => showStatus($build) . ": Hydra job " . showJobName($build) . ($vars->{showSystem} ? " on " . $build->system : ""),
  [3.5709]

  [3.2136]
  + Subject =>

  + showStatus($build) . ": Hydra job " . showJobName($build)

  + . ($vars->{showSystem} ? " on " . $build->system : "")

  + . (scalar @{$vars->{dependents}} > 0 ? " (and " . scalar @{$vars->{dependents}} . " others)" : ""),