Make it easier to use with CMake by adding a Config*.cmake files

This allow applications using cmake to do:
find_package(SignOnQt 8.55 REQUIRED)

Without having to create their on find cmake module.
Version 8.56
New upstream release
New upstream release

- Make it easier to use with CMake by adding a Config*.cmake files
  This allow applications using cmake to do:
  find_package(SignOnQt 8.55 REQUIRED)
- signond: don't attempt demarshalling an invalid QVariant
New upstream release

- Make it easier to use with CMake by adding a Config*.cmake files
  This allow applications using cmake to do:
  find_package(SignOnQt 8.55 REQUIRED)
- signond: don't attempt demarshalling an invalid QVariant  
. Fixes: https://bugs.launchpad.net/bugs/1156776, https://bugs.launchpad.net/bugs/1237782, https://bugs.launchpad.net/bugs/1258578, https://bugs.launchpad.net/bugs/1267805.

Approved by PS Jenkins bot, Ken VanDine.