Examples are not installed in the correct directory

Building from git source code repository works fine.
In commit d159fe199fd508.... the examplesinstallpath was changed in the qdocconf files to include the repository name in the examples.
This has a direct influence on the generated example-maifest files used by Qt Creator.
The goal is that Qt Creator expects all examples from the qtbase repo under qtbase/corelib/... e.g. examples related to corelib. The same is for gui, dbus, network, opengl, ....
But the compilation from source code still installs the examples under examples/corelib instead of example/qtbase/corelib which is defined in the manifest files.
As a consequence a full Qt 5.6.0 build and using this in QtCreator shows no examples at all...