add support for snapshot tarballs
- reworked cgit_print_snapshot to use a list of supported archivers and pick
	one for the suffix supplied
- moved printing of snaphot links into ui-snapshot and make it iterate through
	the said list
diff --git a/cgit.h b/cgit.h
index 2ff5340..f01f6c9 100644
--- a/cgit.h
+++ b/cgit.h
@@ -230,7 +230,7 @@
 extern void cgit_print_commit(char *hex);
 extern void cgit_print_diff(const char *new_hex, const char *old_hex);
 extern void cgit_print_snapshot(struct cacheitem *item, const char *hex,
-				const char *format, const char *prefix,
-				const char *filename);
+				const char *prefix, const char *filename);
+extern void cgit_print_snapshot_links(const char *repo, const char *hex);
 
 #endif /* CGIT_H */