To catch potential top-level build issues like non-unique example
names, missing AUTOGEN / moc does not exist workarounds and other
issues.
The nightly platform uses the newly introduced
'NoSubmoduleDependencies' Coin feature, which will ensure that we
only configure the qt5.git top-level build, not any of the submodules.
Change-Id: Idb79d768749311b4184e211cd54d38219bcba7c6
Reviewed-by: Toni Saario <toni.saario@qt.io>