Use case-insensitive compare when searching for game data by the wizard.

Until now, the wizard was only comparing against an exact file name
match while searching for game data, eg. "data*.cab".
This patch makes it possible to locate game data regardless of case
sensitivity, eg. "Data*.cab".

apps/wizard/unshield/unshieldworker.cpp

@@ -856,7 +856,7 @@ QStringList Wizard::UnshieldWorker::findFiles(const QString &fileName, const QSt
         if (info.isDir()) {
             if (directories)
             {
-                if (info.fileName() == fileName) {
+                if (!info.fileName().compare(fileName, Qt::CaseInsensitive)) {
                     result.append(info.absoluteFilePath());
                 } else {
                     if (recursive)
@@ -872,11 +872,11 @@ QStringList Wizard::UnshieldWorker::findFiles(const QString &fileName, const QSt
 
             switch (flags) {
             case Qt::MatchExactly:
-                if (info.fileName() == fileName)
+                if (!info.fileName().compare(fileName, Qt::CaseInsensitive))
                     result.append(info.absoluteFilePath());
                 break;
             case Qt::MatchEndsWith:
-                if (info.fileName().endsWith(fileName))
+                if (info.fileName().endsWith(fileName), Qt::CaseInsensitive)
                     result.append(info.absoluteFilePath());
                 break;
             }