buildsys: fix make release target

According to git man page the syntax for git archive should have
the <tree-ish> as last argument. Indeed using git 1.5.5.6 the tarball
was not properly created. Newer version (i.e. 1.6.3.3) works fine even if
HEAD comes before other option. For backward compatibility use a syntax
that is fine with older git.

Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>

Makefile.in

@@ -475,7 +475,7 @@ distclean: clean
 
 dist release:
 	$(RM) ../uClibc-$(VERSION).tar
-	git archive HEAD --format=tar --prefix=uClibc-$(VERSION)/ \
+	git archive --format=tar --prefix=uClibc-$(VERSION)/ HEAD \
 		> ../uClibc-$(VERSION).tar
 	cat ../uClibc-$(VERSION).tar | bzip2 -c9 > ../uClibc-$(VERSION).tar.bz2
 	cat ../uClibc-$(VERSION).tar | xz -e -c8 > ../uClibc-$(VERSION).tar.xz