Fix wx[Sorted]ArrayString::Index when wxUSE_STL=1, because

it is different than wxArray::Index (second argument is for
case sensitivity, not search direction).
  Use forward declaration for wx[Sorted]ArrayString, where
possible.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@22128 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/generic/gridctrl.h

@@ -20,6 +20,7 @@
 
 #include "wx/grid.h"
 #include "wx/string.h"
+#include "wx/arrstr.h"
 #include "wx/datetime.h"
 
 #define wxGRID_VALUE_CHOICEINT    _T("choiceint")