ENH: Patch from Alex to add IsDiscouraged method for future use in generating separate documentation for old commands. Also modified documentation of MAKE_DIRECTORY and REMOVE commands to indicate they should not be used.

Source/cmVTKWrapJavaCommand.h

@@ -77,6 +77,12 @@ public:
       "Create Java wrappers for VTK classes.";
     }
   
+  /** This command is only kept for compatibility with older CMake versions. */
+  virtual bool IsDiscouraged()
+    {
+    return true;
+    }
+
 private:
   std::vector<cmSourceFile> WrapClasses;
   std::vector<std::string> WrapHeaders;