Merge topic 'autouic-headers-ninja'

Source/cmQtAutoGenInitializer.cxx

Source/cmQtAutoGenInitializer.h

Tests/QtAutogen/RerunUicOnFileChange/CMakeLists.txt

...en/RerunUicOnFileChange/UicOnFileChange/CMakeLists.txt.in

...s/QtAutogen/RerunUicOnFileChange/UicOnFileChange/main.cpp

...gen/RerunUicOnFileChange/UicOnFileChange/mainwindow.ui.in

...tAutogen/RerunUicOnFileChange/UicOnFileChange/mocwidget.h

Tests/QtAutogen/Tests.cmake