Update NSS to NSS_3_16_RC0.

nss/lib/softoken/sdb.c

 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 /*
  * This file implements PKCS 11 on top of our existing security modules
  *
  * For more information about PKCS 11 See PKCS 11 Token Inteface Standard.
  *   This implementation has two slots:
  *      slot 1 is our generic crypto support. It does not require login.
  *   It supports Public Key ops, and all they bulk ciphers and hashes. 
@@ skipping 1994 matching lines @@
         sqlite_lock = PR_NewLock();
         if (sqlite_lock == NULL) {
             error = CKR_HOST_MEMORY;
             goto loser;
         }
     }
 #endif
 
     /* how long does it take to test for a non-existant file in our working
      * directory? Allows us to test if we may be on a network file system */
-    accessOps = sdb_measureAccess(directory);
+    accessOps = 1;
+    {
+        char *env;
+        env = PR_GetEnv("NSS_SDB_USE_CACHE");
+        /* If the environment variable is set to yes or no, sdb_init() will
+         * ignore the value of accessOps, and we can skip the measuring.*/
+        if (!env || ((PORT_Strcasecmp(env, "no") != 0) &&
+                     (PORT_Strcasecmp(env, "yes") != 0))){
+           accessOps = sdb_measureAccess(directory);
+        }
+    }
 
     /*
      * open the cert data base
      */
     if (certdb) {
         /* initialize Certificate database */
         error = sdb_init(cert, "nssPublic", SDB_CERT, &inUpdate,
                          newInit, flags, accessOps, certdb);
         if (error != CKR_OK) {
             goto loser;
@@ skipping 44 matching lines @@
 s_shutdown()
 {
 #ifdef SQLITE_UNSAFE_THREADS
     if (sqlite_lock) {
         PR_DestroyLock(sqlite_lock);
         sqlite_lock = NULL;
     }
 #endif
     return CKR_OK;
 }