more MSLU fixes and moved MSLU stuff into separate file

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@14293 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/textctrl.cpp

@@ -633,7 +633,7 @@ void wxTextCtrl::DoWriteText(const wxString& value, bool selectionOnly)
 #if wxUSE_UNICODE_MSLU
         // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
         // but EM_STREAMIN works
-        if ( wxGetOsVersion() == wxWIN95 && GetRichVersion() > 1 )
+        if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
         {
            done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
         }
@@ -1718,7 +1718,7 @@ bool wxRichEditModule::OnInit()
 
 void wxRichEditModule::OnExit()
 {
-    for ( int i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
+    for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
     {
         if ( ms_hRichEdit[i] )
         {