Always use DB_PRIVATE. Unfortunately no longer configurable
in the macros file.

--- ./lib/backend/db3.c.orig	2012-06-01 13:34:25.000000000 +0000
+++ ./lib/backend/db3.c	2012-06-01 13:34:32.000000000 +0000
@@ -124,7 +124,7 @@ static int db_init(rpmdb rdb, const char
     int retry_open = 2;
     struct dbConfig_s * cfg = &rdb->cfg;
     /* This is our setup, thou shall not have other setups before us */
-    uint32_t eflags = (DB_CREATE|DB_INIT_MPOOL|DB_INIT_CDB);
+    uint32_t eflags = (DB_CREATE|DB_INIT_MPOOL|DB_INIT_CDB|DB_PRIVATE);
 
     if (rdb->db_dbenv != NULL) {
 	rdb->db_opens++;