no-png is an old unused scope that should be mapped to the png
feature instead.
Map contains(QT_CONFIG, shared) to correct variable check.
Sympy doesn't like dashes in indentifiers, so replace all of them
with a _dash_ token which will be replaced again at the end
of the condition simplifying.
When doing sympy preprocessing, fix mapping of target names that
don't contain double colons.
Change-Id: Id3d37800665c96505b7cbb1d80fdbed59c3ae9c0
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
5c75f6a21a