Update NSS to 3.21 RTM and NSPR to 4.11 RTM

nspr/pr/include/prlog.h

 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* 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/. */
 
 #ifndef prlog_h___
 #define prlog_h___
 
 #include "prtypes.h"
 
@@ skipping 139 matching lines @@
 ** and a time stamp. Also, the routine provides a missing newline if one
 ** is not provided.
 */
 NSPR_API(void) PR_LogPrint(const char *fmt, ...);
 
 /*
 ** Flush the log to its file.
 */
 NSPR_API(void) PR_LogFlush(void);
 
-NSPR_API(void) PR_Assert(const char *s, const char *file, PRIntn ln);
+NSPR_API(void) PR_Assert(const char *s, const char *file, PRIntn ln)
+    PR_PRETEND_NORETURN;
 
 #if defined(DEBUG) || defined(FORCE_PR_LOG)
 #define PR_LOGGING 1
 
 #define PR_LOG_TEST(_module,_level) \
     ((_module)->level >= (_level))
 
 /*
 ** Log something.
 **    "module" is the address of a PRLogModuleInfo structure
@@ skipping 41 matching lines @@
 #else
 
 #define PR_ASSERT(expr) ((void) 0)
 #define PR_NOT_REACHED(reasonStr)
 
 #endif /* defined(DEBUG) || defined(FORCE_PR_ASSERT) */
 
 PR_END_EXTERN_C
 
 #endif /* prlog_h___ */