added BOOST_NO_STDC_NAMESPACE for KCC 4.0a and older

because <cwchar> does not have using-declarations to put the contents of
<wchar.h> into namespace std, in contrast to <cstdio>, which does.


[SVN r8945]

libs/config

@@ -1 +1 @@
-Subproject commit 6b3dd0d1cb491b831bee2917b46d34a32f76a6ea
+Subproject commit 9b7b4524e3278d2841588258ecf49d178f24a32f