Merge branch 'jk/parseopt-string-list' into jk/string-list-static-init

* jk/parseopt-string-list:
  blame,shortlog: don't make local option variables static
  interpret-trailers: don't duplicate option strings
  parse_opt_string_list: stop allocating new strings

parse-options-cb.c

@@ -144,7 +144,7 @@ int parse_opt_string_list(const struct option *opt, const char *arg, int unset)
 	if (!arg)
 		return -1;
 
-	string_list_append(v, xstrdup(arg));
+	string_list_append(v, arg);
 	return 0;
 }