Makefile: generate executable scripts.

Makefile

@@ -10,6 +10,7 @@ SCRIPTS += $(SHIN:.sh.in=.sh)
 
 %.sh: %.sh.in
 	 sed -e "s|@@MKLIVE_VERSION@@|$(VERSION) $(GITVER)|g" $^ > $@
+	 chmod +x $@
 
 all: $(SCRIPTS)