1. wxFileDialog patch for multiple selection applied (with some small changes),

added demo for it in the sample and documented
2. wxMimeTypeManager works a bit better under Windows (doesn't ignore the
   extensions without filetypes)


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4850 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/generic/filedlgg.h

@@ -155,7 +155,7 @@ public:
     wxString GetWildcard() const { return m_wildCard; }
     long GetStyle() const { return m_dialogStyle; }
     int GetFilterIndex() const { return m_filterIndex; }
-    
+
     // for multiple file selection
     void GetPaths(wxArrayString& paths) const;
     void GetFilenames(wxArrayString& files) const;
@@ -171,7 +171,7 @@ public:
     void OnChoice( wxCommandEvent &event );
     void OnTextEnter( wxCommandEvent &event );
     void OnCheck( wxCommandEvent &event );
-    
+
     void HandleAction( const wxString &fn );
 
 protected:
@@ -193,16 +193,6 @@ private:
     DECLARE_EVENT_TABLE()
 };
 
-enum
-{
-    wxOPEN  = 1,
-    wxSAVE = 2,
-    wxOVERWRITE_PROMPT = 4,
-    wxHIDE_READONLY = 8,
-    wxFILE_MUST_EXIST = 16,
-    wxMULTIPLE = 32
-};
-
 // File selector - backward compatibility
 WXDLLEXPORT wxString
 wxFileSelector(const wxChar *message = wxFileSelectorPromptStr,