don't use obsolete functions (mostly copystring() and Count()), remove their documentation (patch 1697956)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@45395 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/arrstr.h

@@ -149,7 +149,7 @@ public:
   {
       wxASSERT_MSG( !IsEmpty(),
                     _T("wxArrayString: index out of bounds") );
-      return Item(Count() - 1);
+      return Item(GetCount() - 1);
   }