[Qt-creator] Buildung Qt Creator

[André Pönitz]

Just a warning for "self-builders": There have been several
large scale changes to the directory layout and parts of the
the core interface lately.

I am not sure all of these changes will be detected reliably by
the build system, so in case you encounter build issues I would
recommend re-starting a full build with a clean build tree.

Sorry for the inconvenience.

Regards,
Andre'