Although this is 3rd-party code, it now diverges -- by merging the
stale PR from upstream, and from adding features of our own --
enough that we should not pretend that it is the original 3rdparty
code.
Chase a couple of include paths that called this from 3rdparty/
The setText() support was submitted upstream at
https://github.com/snowwlex/QtWaitingSpinner/pull/14
by `huxingyi <huxingyi@msn.com>`, but not merged. The
commits from that PR were merged into Calamares' copy
of the waitingspinnerwidget files. Add relevant tags
(which aren't in the PR, but Calamares does chase SPDX)
- was getting multiple definitions of moc-related code due to automoc
combined with KDSAG having its own #include moc, comment-out the include.
- while here, simplify the CMake bits for building KDSAG
