Delete bundled copy of NSS and replace with README.

nspr/lib/libc/src/strcmp.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 "plstr.h"
-#include <string.h>
-
-PR_IMPLEMENT(PRIntn)
-PL_strcmp(const char *a, const char *b)
-{
-    if( ((const char *)0 == a) || (const char *)0 == b ) 
-        return (PRIntn)(a-b);
-
-    return (PRIntn)strcmp(a, b);
-}
-
-PR_IMPLEMENT(PRIntn)
-PL_strncmp(const char *a, const char *b, PRUint32 max)
-{
-    if( ((const char *)0 == a) || (const char *)0 == b ) 
-        return (PRIntn)(a-b);
-
-    return (PRIntn)strncmp(a, b, (size_t)max);
-}