Add some missing wxGrid methods

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_3_0_BRANCH@76330 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/wx/grid.h

@@ -4480,6 +4480,10 @@ public:
                             int verticalAlignment = wxALIGN_TOP,
                             int textOrientation = wxHORIZONTAL ) const;
 
+    void SetCellHighlightColour( const wxColour& );
+    void SetCellHighlightPenWidth(int width);
+    void SetCellHighlightROPenWidth(int width);   
+
     
 protected:
     /**