Make it run with Qt6

This is a huge commit. Changes:
* Obviously, make it compile
* Make it run (only scarcely tested)
* get rid of most of clang's warnings

Let's see what surprises are in store...

1 files changed, 0 insertions, 3 deletions

diff --git a/programconfigurator.h b/programconfigurator.h
index 3df66a5..543619c 100644
--- a/programconfigurator.h
+++ b/programconfigurator.h
@@ -16,9 +16,7 @@
 class QLineEdit;
 class QPushButton;
 class QComboBox;
-class QStringList;
 class QLabel;
-class QStringList;
 class QCheckBox;
 
 class ProgramConfigurator : public QWidget {
@@ -51,7 +49,6 @@ class ProgramConfigurator : public QWidget {
 		QPushButton *mRemove;
 		QPushButton *mUpdate;
 		QPushButton *mDefault;
-        QCheckBox *mInternalViewer;
 		QLabel *mDefaultLabel;
 		QHash<QString, QVariant> mData;
 		QString mDefautProg;