• Fix bug causing an exception to be thrown when vmq-admin cluster leave is
  used with a timout value less than 5 seconds (#642).
• Fix for OSX compilation issue on vmq_passwd due to openssl headers not found.
• Bugfix: Fix a bug that prevented user plugins with an explicit path to be
  loaded
• Fix build issue on Raspberry PI (make rpi-32).
• Bugfix: Fix race condition when fetching data from the internal query subsystem.