cleaning up the make build and clean process for the unit cube example

test/pargen/Makefile

@@ -23,7 +23,6 @@ runsd:
 
 psb_d_unitcube: psb_d_unitcube.o
 	$(FLINK)  psb_d_unitcube.o -o psb_d_unitcube $(PSBLAS_LIB) $(LDLIBS)
-	# /bin/mv psb_d_unitcube $(EXEDIR)
 
 psb_d_pde3d: psb_d_pde3d.o
 	$(FLINK)  psb_d_pde3d.o -o psb_d_pde3d $(PSBLAS_LIB) $(LDLIBS)
@@ -37,18 +36,17 @@ psb_d_pde2d: psb_d_pde2d.o
 	$(FLINK)  psb_d_pde2d.o -o psb_d_pde2d $(PSBLAS_LIB) $(LDLIBS)
 	/bin/mv psb_d_pde2d $(EXEDIR)
 
-
 psb_s_pde2d: psb_s_pde2d.o
 	$(FLINK) psb_s_pde2d.o  -o psb_s_pde2d $(PSBLAS_LIB) $(LDLIBS)
 	/bin/mv psb_s_pde2d $(EXEDIR)
 
-
 run:
 	./psb_d_unitcube ppde.inp
 
 clean:
 	/bin/rm -f psb_d_pde3d.o psb_s_pde3d.o  psb_d_pde2d.o psb_s_pde2d.o  *$(.mod) \
 	$(EXEDIR)/psb_d_pde3d $(EXEDIR)/psb_s_pde3d $(EXEDIR)/psb_d_pde2d $(EXEDIR)/psb_s_pde2d
+	/bin/rm -f psb_d_unitcube *.o
 verycleanlib:
 	(cd ../..; make veryclean)
 lib: