Mixed Bizness

• Added official support for Jessie and Centos7
• Improved mysql postfix configuration detection (fixes several
  issues with mod-bwl and other modules that relies on proper
  postfix mysql detection to really provide good information about
  if an account or domain is local).
• Updated valvulad-mgr.py to allow testing local servers with no
  SASL indication.
• Updated valvulad server and mod-bwl to provide more information
  when debug is enabled.

More details at:
http://lists.aspl.es/pipermail/valvula/2016-September/000037.html