Remove test/*.o files on make clean.

#clean: delete all files from the current directory that are normally created by building the program. 

clean:

	$(DEL_FILE) $(OBJECTS_DIR)/*.o

	$(DEL_FILE) $(OBJECTS_DIR)/*.o test/*.o

	$(DEL_FILE) *~ core *.core

	$(DEL_FILE) $(LIB_DESTDIR)/*.a

	$(DEL_FILE) $(LIB_DESTDIR)/*.so*