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

src/generic/listctrl.cpp

@@ -2390,7 +2390,9 @@ bool wxListCtrl::Create( wxWindow *parent, wxWindowID id,
 
     bool ret = wxControl::Create( parent, id, pos, size, s, name );
 
+#if wxUSE_VALIDATORS
     SetValidator( validator );
+#endif
   
     if (s & wxSUNKEN_BORDER) s -= wxSUNKEN_BORDER;