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/socket.h

@@ -16,6 +16,10 @@
 #pragma interface "socket.h"
 #endif
 
+#include "wx/defs.h"
+
+#if wxUSE_SOCKETS
+
 // ---------------------------------------------------------------------------
 // Windows(tm) specific
 // ---------------------------------------------------------------------------
@@ -278,3 +282,7 @@ typedef void (wxEvtHandler::*wxSocketEventFunction)(wxSocketEvent&);
   (wxObject *) NULL  },
 
 #endif
+  // wxUSE_SOCKETS
+
+#endif
+  // _WX_NETWORK_SOCKET_H