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-summary.c b/ui-summary.c
index 227ed27..b4fdd57 100644
--- a/ui-summary.c
+++ b/ui-summary.c
@@ -59,7 +59,7 @@
 	if (ctx.cfg.summary_log > 0) {
 		html("<tr class='nohover'><td colspan='4'>&nbsp;</td></tr>");
 		cgit_print_log(ctx.qry.head, 0, ctx.cfg.summary_log, NULL,
-			       NULL, NULL, 0, 0);
+			       NULL, NULL, 0, 0, 0);
 	}
 	if (ctx.repo->clone_url)
 		print_urls(expand_macros(ctx.repo->clone_url), NULL);