ui-log: Add "commit-sort" option for controlling commit ordering

This makes it possible to use strict commit date ordering or strict
topological ordering by passing the corresponding flags to "git log".

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
diff --git a/ui-log.h b/ui-log.h
index d0cb779..d324c92 100644
--- a/ui-log.h
+++ b/ui-log.h
@@ -3,7 +3,7 @@
 
 extern void cgit_print_log(const char *tip, int ofs, int cnt, char *grep,
 			   char *pattern, char *path, int pager,
-			   int commit_graph);
+			   int commit_graph, int commit_sort);
 extern void show_commit_decorations(struct commit *commit);
 
 #endif /* UI_LOG_H */