HipChat notification: do not include latest commits of all inputs in 'who-broke-the-build' list. Use only committers from inputs that have actually changed since previous build.

Dependencies

• [2] NB2VOKIR Include names of committers in HipChat notifications
• [*] ZDEHAFHV Add a plugin for HipChat notification

Change contents

• edit in src/lib/Hydra/Plugin/HipChatNotification.pm at line 54
  [2.2502]

  [4.1278]
  + next if $curInput->revision eq $prevInput->revision;