Added wxBitmap::Rescale() from 2_4

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@24144 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk/bitmap.h

@@ -113,6 +113,8 @@ public:
     GdkPixmap *GetPixmap() const;
     GdkBitmap *GetBitmap() const;
     
+    // Basically, this corresponds to Win32 StretchBlt()
+    wxBitmap Rescale( int clipx, int clipy, int clipwidth, int clipheight, int width, int height );
 protected:
     bool CreateFromXpm(const char **bits);
     bool CreateFromImage(const wxImage& image, int depth);