applied patch for compilation with gcc 3.0

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@10445 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/defs.h

@@ -55,6 +55,17 @@
 
 #include "wx/setup.h"
 
+// old C++ headers (like <iostream.h>) declare classes in the global namespace
+// while the new, standard ones (like <iostream>) do it in std:: namespace
+//
+// using this macro allows constuctions like "wxSTD iostream" to work in
+// either case
+#if !wxUSE_IOSTREAMH
+ #define wxSTD std::
+#else
+ #define wxSTD
+#endif
+
 // just in case they were defined in setup.h
 #ifdef PACKAGE
 #undef PACKAGE