GNU Gatekeeper 5.7

This version has some important bug fixes, improves interoperability
with other vendors and also has a few new features.

Bug fixes:

• several severe crashes and a few memory leaks have been fixed

Improved interoperability with:

• Lifesize endpoints
• Poly's Microsoft Teams gateway
• Polycom RealPresence Capture Server

New features:

• You get a warning in the GUI / on the status port if one of your
  endpoints has an incorrect time setting and this password
  authentication fails. This makes trouble shooting a lot easier.

• Invalid TPKT packets (eg. due to network errors) now don't
  necessarily take down an otherwise healthy call. Use the new
  AbortOnInvalidTPKT=0 switch to enable.

• You have a new %{Vendor} variable for SqlAuth RegQuerys and LuaAuth

See changelog.txt for a full change log.