Changes related to stream includes

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@818 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/object.h

@@ -30,13 +30,21 @@ class WXDLLEXPORT wxObject;
 #endif
 
 class WXDLLEXPORT wxClassInfo;
-class WXDLLIMPORT ostream;
 class WXDLLEXPORT wxInputStream;
 class WXDLLEXPORT wxObjectInputStream;
 class WXDLLEXPORT wxObjectOutputStream;
 class WXDLLEXPORT wxHashTable;
 class WXDLLEXPORT wxObject_Serialize;
 
+#if wxUSE_IOSTREAMH
+#  include <ostream.h>
+#else
+#  include <ostream>
+#  ifdef _MSC_VER
+      using namespace std;
+#  endif
+#endif
+
 /*
  * Dynamic object system declarations
  */