Change the NSS and NSPR source tree to the new directory structure to be

mozilla/nsprpub/pr/src/misc/prenv.c

-/* -*- 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/. */
-
-#include <string.h>
-#include "primpl.h"
-
-/* Lock used to lock the environment */
-#if defined(_PR_NO_PREEMPT)
-#define _PR_NEW_LOCK_ENV()
-#define _PR_DELETE_LOCK_ENV()
-#define _PR_LOCK_ENV()
-#define _PR_UNLOCK_ENV()
-#elif defined(_PR_LOCAL_THREADS_ONLY)
-extern _PRCPU * _pr_primordialCPU;
-static PRIntn _is;
-#define _PR_NEW_LOCK_ENV()
-#define _PR_DELETE_LOCK_ENV()
-#define _PR_LOCK_ENV() if (_pr_primordialCPU) _PR_INTSOFF(_is);
-#define _PR_UNLOCK_ENV() if (_pr_primordialCPU) _PR_INTSON(_is);
-#else
-static PRLock *_pr_envLock = NULL;
-#define _PR_NEW_LOCK_ENV() {_pr_envLock = PR_NewLock();}
-#define _PR_DELETE_LOCK_ENV() \
-    { if (_pr_envLock) { PR_DestroyLock(_pr_envLock); _pr_envLock = NULL; } }
-#define _PR_LOCK_ENV() { if (_pr_envLock) PR_Lock(_pr_envLock); }
-#define _PR_UNLOCK_ENV() { if (_pr_envLock) PR_Unlock(_pr_envLock); }
-#endif
-
-/************************************************************************/
-
-void _PR_InitEnv(void)
-{
-        _PR_NEW_LOCK_ENV();
-}
-
-void _PR_CleanupEnv(void)
-{
-    _PR_DELETE_LOCK_ENV();
-}
-
-PR_IMPLEMENT(char*) PR_GetEnv(const char *var)
-{
-    char *ev;
-
-    if (!_pr_initialized) _PR_ImplicitInitialization();
-
-    _PR_LOCK_ENV();
-    ev = _PR_MD_GET_ENV(var);
-    _PR_UNLOCK_ENV();
-    return ev;
-}
-
-PR_IMPLEMENT(PRStatus) PR_SetEnv(const char *string)
-{
-    PRIntn result;
-
-    if (!_pr_initialized) _PR_ImplicitInitialization();
-
-    if ( !strchr(string, '=')) return(PR_FAILURE);
-
-    _PR_LOCK_ENV();
-    result = _PR_MD_PUT_ENV(string);
-    _PR_UNLOCK_ENV();
-    return (result)? PR_FAILURE : PR_SUCCESS;
-}