added wxShutdown (patch 547443)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@15383 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/os2/utils.cpp

@@ -198,6 +198,13 @@ bool wxShell(
     return (rc != 0);
 }
 
+// Shutdown or reboot the PC 
+bool wxShutdown(wxShutdownFlags wFlags)
+{
+    // TODO
+    return FALSE;
+}
+
 // Get free memory in bytes, or -1 if cannot determine amount (e.g. on UNIX)
 long wxGetFreeMemory()
 {