No real changes, just use const_cast<> instead of C casts.

Replace many comments indicating that the C cast used was really a
const_cast<> with the proper cast itself. There is no reason to not use it any
longer, all the supported compilers understand it.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@65861 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/strconv.cpp

@@ -3227,7 +3227,7 @@ void wxCSConv::CreateConvIfNeeded() const
 {
     if ( m_deferred )
     {
-        wxCSConv *self = (wxCSConv *)this; // const_cast
+        wxCSConv *self = const_cast<wxCSConv *>(this);
 
         // if we don't have neither the name nor the encoding, use the default
         // encoding for this system