Update to NSS 3.15.5 and NSPR 4.10.3.

nspr/pr/include/md/_unixos.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 prunixos_h___
 #define prunixos_h___
 
 /*
  * If FD_SETSIZE is not defined on the command line, set the default value
@@ skipping 475 matching lines @@
 extern void * _MD_MemMap(struct PRFileMap *fmap, PRInt64 offset,
         PRUint32 len);
 #define _MD_MEM_MAP _MD_MemMap
 
 extern PRStatus _MD_MemUnmap(void *addr, PRUint32 size);
 #define _MD_MEM_UNMAP _MD_MemUnmap
 
 extern PRStatus _MD_CloseFileMap(struct PRFileMap *fmap);
 #define _MD_CLOSE_FILE_MAP _MD_CloseFileMap
 
+extern PRStatus _MD_SyncMemMap(
+    PRFileDesc *fd,
+    void *addr,
+    PRUint32 len);
+#define _MD_SYNC_MEM_MAP _MD_SyncMemMap
+
 /*
  * The standard (XPG4) gettimeofday() (from BSD) takes two arguments.
  * On some SVR4 derivatives, gettimeofday() takes only one argument.
  * The GETTIMEOFDAY macro is intended to hide this difference.
  */
 #ifdef HAVE_SVID_GETTOD
 #define GETTIMEOFDAY(tp) gettimeofday(tp)
 #else
 #define GETTIMEOFDAY(tp) gettimeofday((tp), NULL)
 #endif
@@ skipping 103 matching lines @@
 {
     _MD_Open64 _open64;
     _MD_Mmap64 _mmap64;
     _MD_Stat64 _stat64;
     _MD_Fstat64 _fstat64;
     _MD_Lseek64 _lseek64;
 };
 extern struct _MD_IOVector _md_iovector;
 
 #endif /* prunixos_h___ */