Fix build failures with old cp and zip

Makefile

@@ -49,11 +49,11 @@ youtube-dl: youtube_dl/*.py youtube_dl/*/*.py
 	mkdir -p zip
 	for d in youtube_dl youtube_dl/downloader youtube_dl/extractor youtube_dl/postprocessor ; do \
 	  mkdir -p zip/$$d ;\
-	  cp -a $$d/*.py zip/$$d/ ;\
+	  cp -pPR $$d/*.py zip/$$d/ ;\
 	done
 	touch -t 200001010101 zip/youtube_dl/*.py zip/youtube_dl/*/*.py
 	mv zip/youtube_dl/__main__.py zip/
-	cd zip ; zip --quiet ../youtube-dl youtube_dl/*.py youtube_dl/*/*.py __main__.py
+	cd zip ; zip -q ../youtube-dl youtube_dl/*.py youtube_dl/*/*.py __main__.py
 	rm -rf zip
 	echo '#!$(PYTHON)' > youtube-dl
 	cat youtube-dl.zip >> youtube-dl