REG: Backing target (.dll) for QML module not copied to OUTPUT_DIRECTORY until after switching to another kit and back

Steps to reproduce:

• Open https://github.com/mitchcurtis/slate
• Enable two kits (I used dev and 6.5)
• Build and run; you'll get an error about slate.dll not being found

Workaround: switch to another kit, and then switch back, and the file will have been copied to qml/Slate in the build directory.

This works as expected with Creator 12.