rewrite package target since debian/ is not in a separate branch anymore

Makefile

@@ -35,13 +35,9 @@ fullname:
 
 package:
 	make dist-bzip2
-	rm -rf debian
-	git checkout debian debian
 	cd sdist; mv $(FULLNAME).tar.bz2 $(NAME)_$(VERSION).orig.tar.bz2; tar xvjf $(NAME)_$(VERSION).orig.tar.bz2
 	cp -R debian sdist/$(FULLNAME)/
 	cd sdist/$(FULLNAME); dpkg-buildpackage -uc -us
 	rm -rf sdist/$(FULLNAME)
-	git rm -r --cached debian
-	rm -rf debian