provide overloads for all kinds of strings for wxDataFormat ctor to allow passing strings as formats implicitly

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@46321 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk1/dataobj.cpp

@@ -58,7 +58,7 @@ wxDataFormat::wxDataFormat( wxDataFormatId type )
     SetType( type );
 }
 
-wxDataFormat::wxDataFormat( const wxString &id )
+void wxDataFormat::InitFromString( const wxString &id )
 {
     PrepareFormats();
     SetId( id );