use WXDFB_FONTPATH variable instead of WXDFB_FONTDIR and search the dirs recursively for fonts

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@43835 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/dfb/private/fontmgr.h

@@ -72,6 +72,7 @@ public:
 private:
     // adds all fonts using AddBundle()
     void AddAllFonts();
+    void AddFontsFromDir(const wxString& indexFile);
     void AddFont(const wxString& dir, const wxString& name, wxFileConfig& cfg);
     void SetDefaultFonts(wxFileConfig& cfg);