Message box to suggest the user not run wine as root.

programs/winecfg/main.c

@@ -29,6 +29,9 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <wine/debug.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
 
 #include "properties.h"
 #include "resource.h"
@@ -203,6 +206,10 @@ WinMain (HINSTANCE hInstance, HINSTANCE hPrev, LPSTR szCmdLine, int nShow)
 	WINE_ERR("initialization failed, aborting\n");
 	ExitProcess(1);
     }
+
+    /* is the user running as root? */
+    if(getuid() == 0)
+        MessageBox(NULL, "It is not advisable to run wine as root.  Doing so may compromise the security of your computer.  Please run wine as a normal user.", "Warning", MB_OK);
     
     /*
      * The next 3 lines should be all that is needed