Makefile: use git archive to build the archive

Author: oaubert

Makefile

@@ -4,7 +4,7 @@ doc: FORCE
 	PYTHONPATH=$(shell pwd)/lib find lib/advene -name '*.py' | xargs -n 500 epydoc -o doc/html -n Advene --inheritance=grouped
 
 archive:
-	tar -C .. --exclude=.github --exclude=mac --exclude=locale --exclude=lib/cherrypy --exclude=\*.pyc --exclude=build/ --exclude=.git --exclude=.svn --exclude=\*~ -cvzf ../$(name).tgz $(name)
+	git archive --prefix=$(name)/ --output=../$(name).tgz HEAD
 
 FORCE: