Added make for VTK stuff

src/Makefile

@@ -98,21 +98,26 @@ subdirs:
 	cd OCTREE;    make all
 	cd RESAMPLE;  make all
 
+vtk: 
+        cd OCTREE;    make all 
+        cd VTK;       make all
+
 .PHONY: objclean
 objclean:
 	cd CASCADE;   make $@
 	cd NN;        make $@
 	cd OCTREE;    make $@
 	cd RESAMPLE;  make $@
+	cd VTK;       make $@
 	rm -f *.o *.mod $(COMPILE_OUT)
 
-
 .PHONY: distclean
 distclean: objclean
 	cd CASCADE;   make $@
 	cd NN;        make $@
 	cd OCTREE;    make $@
 	cd RESAMPLE;  make $@
+	cd VTK;       make $@
 	rm -f $(BIN) $(BIN).link.stdout $(BIN).link.stderr
 
 .PHONY: more-output