remove copyright, switch to AOSP license

// Copyright ClockworkMod, LLC. Reference and porting purposes only. Usage of the extendedcommand API

// is restricted to those granted explicit permission, or by use of the ROM Manager Recovery API.

// https://github.com/koush/TestRomManager

/*

 * Copyright (C) 2008 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

#include <ctype.h>

#include <errno.h>

#include <fcntl.h>