CONTRIB: halog: fix build issue caused by %L printf format

%Ld isn't standard, %lld is more portable. In addition, the format
should be %llu since the printed values are unsigned. This should
address issue #1013.
diff --git a/contrib/halog/halog.c b/contrib/halog/halog.c
index 59b7282..820325a 100644
--- a/contrib/halog/halog.c
+++ b/contrib/halog/halog.c
@@ -1288,7 +1288,7 @@
 		node = eb_last(&timers[0]);
 		while (node) {
 			ustat = container_of(node, struct url_stat, node.url.node);
-			printf("%d %d %Ld %Ld %Ld %Ld %Ld %Ld %s\n",
+			printf("%d %d %llu %llu %llu %llu %llu %llu %s\n",
 			       ustat->nb_req,
 			       ustat->nb_err,
 			       ustat->total_time,