allows also the GTK-based wxWidgets apps to be bundled
(even though they still bounce off the Dock)
http://trac.wxwidgets.org/changeset/74703
--- src/gtk/app.cpp.orig
+++ src/gtk/app.cpp
@@ -415,6 +415,21 @@ bool wxApp::Initialize(int& argc, wxChar **argv)
 {
     bool init_result;
 
+    // Mac OS X passes a process serial number command line argument when
+    // the application is launched from the Finder. This argument must be
+    // removed from the command line arguments before being handled by the
+    // application (otherwise applications would need to handle it)
+    if ( argc > 1 )
+    {
+        static const wxChar *ARG_PSN = _T("-psn_");
+        if ( wxStrncmp(argv[1], ARG_PSN, wxStrlen(ARG_PSN)) == 0 )
+        {
+            // remove this argument
+            --argc;
+            memmove(argv + 1, argv + 2, argc * sizeof(char *));
+        }
+    }
+
 #if wxUSE_THREADS
     if (!g_thread_supported())
         g_thread_init(NULL);