Lots more Unicode fixes.

wxClipboard fixes for GTK2 and UTF8.
  wxFileConfig now uses wxConvLocal to convert text
    and doesn't crash anymore..


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@16601 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/file.h

@@ -99,7 +99,7 @@ public:
     // returns the number of bytes written
   size_t Write(const void *pBuf, size_t nCount);
     // returns true on success
-  bool Write(const wxString& s, wxMBConv& conv = wxConvLibc)
+  bool Write(const wxString& s, wxMBConv& conv = wxConvLocal)
   {
       const wxWX2MBbuf buf = s.mb_str(conv);
       size_t size = strlen(buf);