Added a few #if wxUSE_XXX

Regrouped image format handlers
  Updated the rest accordingly
  Added changes.txt for wxGTK


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@2795 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/generic/progdlgg.h

@@ -17,10 +17,11 @@
 #endif
 
 #include "wx/setup.h"
+
+#if wxUSE_PROGRESSDLG
+
 #include "wx/frame.h"
 
-
-
 /** Progress dialog which shows a moving progress bar.
     Taken from the Mahogany project.*/
 
@@ -88,5 +89,7 @@ private:
 
    DECLARE_EVENT_TABLE()
 };
+#endif
+
 #endif
     // __PROGDLGH_G__