Delete bundled copy of NSS and replace with README.

nspr/lib/libc/src/strchr.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(char *)
-PL_strchr(const char *s, char c)
-{
-    if( (const char *)0 == s ) return (char *)0;
-
-    return strchr(s, c);
-}
-
-PR_IMPLEMENT(char *)
-PL_strrchr(const char *s, char c)
-{
-    if( (const char *)0 == s ) return (char *)0;
-
-    return strrchr(s, c);
-}
-
-PR_IMPLEMENT(char *)
-PL_strnchr(const char *s, char c, PRUint32 n)
-{
-    if( (const char *)0 == s ) return (char *)0;
-
-    for( ; n && *s; s++, n-- )
-        if( *s == c )
-            return (char *)s;
-
-    if( ((char)0 == c) && (n > 0) && ((char)0 == *s) ) return (char *)s;
-
-    return (char *)0;
-}
-
-PR_IMPLEMENT(char *)
-PL_strnrchr(const char *s, char c, PRUint32 n)
-{
-    const char *p;
-
-    if( (const char *)0 == s ) return (char *)0;
-
-    for( p = s; n && *p; p++, n-- )
-        ;
-
-    if( ((char)0 == c) && (n > 0) && ((char)0 == *p) ) return (char *)p;
-
-    for( p--; p >= s; p-- )
-        if( *p == c )
-            return (char *)p;
-
-    return (char *)0;
-}