make compilable on RHEL-6

Change-Id: I5d0e2c23af1972c84e999ad458ae47703d94e9e0

vcl/inc/unx/gtk/gtkframe.hxx

@@ -54,6 +54,10 @@ typedef XLIB_Window GdkNativeWindow;
 #define gdk_window_foreign_new_for_display(a,b) gdk_x11_window_foreign_new_for_display(a,b)
 #endif
 
+#if !(GLIB_MAJOR_VERSION > 2 || GLIB_MINOR_VERSION >= 26)
+    typedef void GDBusConnection;
+#endif
+
 class GtkSalFrame : public SalFrame
 {
     static const int nMaxGraphics = 2;

vcl/inc/vcl/tabpage.hxx

@@ -40,7 +40,7 @@ private:
 
 public:
                     TabPage( Window* pParent, WinBits nStyle = 0 );
-                    TabPage(Window *pParent, const rtl::OString& rID, const rtl::OUString& rUIXMLDescription);
+                    TabPage(Window *pParent, const OString& rID, const OUString& rUIXMLDescription);
 
                     TabPage( Window* pParent, const ResId& rResId );