[Development] api_changes merged back to master

[lars.knoll at nokia.com]

Hi everybody,

the merge of api_changes back into master for qtbase finally made it's way
through the CI system. I'm currently in the process of merging declarative
back and Kent is staging all the changes required to fix compilation of
the other modules.

>From now on most changes should go to master. I'll keep api_changes around
for another little while as there are still some changes in gerrit against
it, but I would like to empty this queue now and then remove the
api_changes branch soon.

Cheers,
Lars