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/common/stream.cpp

@@ -15,15 +15,22 @@
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+  #pragma hdrstop
+#endif
+
+#ifndef WX_PRECOMP
+  #include "wx/defs.h"
+#endif
+
+#if wxUSE_STREAMS
+
 #include <ctype.h>
 #include <wx/stream.h>
 #include <wx/datstrm.h>
 #include <wx/objstrm.h>
 
-#ifdef __BORLANDC__
-#pragma hdrstop
-#endif
-
 #define BUF_TEMP_SIZE 10000
 
 // ----------------------------------------------------------------------------
@@ -855,3 +862,6 @@ wxOutputStream& wxEndL(wxOutputStream& stream)
   return stream.Write("\n", 1);
 #endif
 }
+
+#endif
+  // wxUSE_STREAMS