Fix 64-bit time_t issue

Index: src/utils/pool_relcache.c
--- src/utils/pool_relcache.c.orig
+++ src/utils/pool_relcache.c
@@ -148,7 +148,7 @@ void *pool_search_relcache(POOL_RELCACHE *relcache, PO
 				{
 					ereport(DEBUG1,
 						(errmsg("searching relcache"),
-							 errdetail("relcache for database:%s table:%s expired. now:%ld expiration time:%ld", dbname, table, now, relcache->cache[i].expire)));
+							 errdetail("relcache for database:%s table:%s expired. now:%lld expiration time:%lld", dbname, table, (long long)now, (long long)relcache->cache[i].expire)));
 
 					relcache->cache[i].refcnt = 0;
 					break;
