Try to fix SDX bug on Mac when running from an .app file

src/main.cpp

@@ -144,10 +144,12 @@ public:
     int main(int argc, char *argv[]) {
         fprintf(stderr,"%s: argv0 = %s\n", __func__, argv[0]);
         QString binaryName(argv[0]);
+        binaryName = binaryName.loLower();
+
         QStringList pathParts = binaryName.split(QLatin1Char('/'));
         qDebug() << pathParts;
 
-        isdragonx = binaryName.endsWith("dragonx") || binaryName.endsWith("dragonx.exe");
+        isdragonx = binaryName.endsWith("dragonx") || binaryName.endsWith("dragonx.exe") || binaryName.endsWith("dragonx.app");
         qDebug() << "isdragonx=" << isdragonx;
 
         QCoreApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);