Add wxNOEXCEPT and use it for std::streambuf-derived classes.

This fixes warnings from Intel compiler about overriding function using a
different exception specification than the base one and also incidentally
provides a handy macro that can be useful in other situations.

Closes #14826.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72978 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/textctrl.h

@@ -31,7 +31,7 @@ public:
 
         Create(parent, id, value, pos, size, style, validator, name);
     }
-    virtual ~wxTextCtrl();
+    virtual ~wxTextCtrl() wxNOEXCEPT;
 
     bool Create(wxWindow *parent, wxWindowID id,
                 const wxString& value = wxEmptyString,