Implement a much more visually appealing, but much more internally

grotty, hack to get around Explorer maximising the config box.

[originally from svn r707]

window.c

@@ -126,6 +126,10 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show) {
 
     InitCommonControls();
 
+    /* Ensure a Maximize setting in Explorer doesn't maximise the
+     * config box. */
+    defuse_showwindow();
+
     /*
      * Process the command line.
      */