Read the config in rev-list

Otherwise "git rev-list --header HEAD" will not do the right
thing if i18n.commitencoding is set.

Signed-off-by: Fredrik Kuivinen <frekui@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>

builtin-rev-list.c

@@ -226,6 +226,7 @@ int cmd_rev_list(int argc, const char **argv, const char *prefix)
 	int i;
 	int read_from_stdin = 0;
 
+	git_config(git_default_config);
 	init_revisions(&revs, prefix);
 	revs.abbrev = 0;
 	revs.commit_format = CMIT_FMT_UNSPECIFIED;