Revert "Switch libraries to using new tags."

sdk/lib/scalarlist/byte_arrays.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-part of dart.scalarlist;
-
 /**
  * A random-access sequence of bytes that also provides random access to
  * the fixed-width integers and floating point numbers represented by
  * those bytes. Byte arrays may be used to pack and unpack data from
  * external sources (such as networks or files systems), and to process
  * large quantities of numerical data more efficiently than would be possible
  * with ordinary [List] implementations. Byte arrays can save space, by
  * eliminating the need for object headers, and time, by eliminating the
  * need for data copies. Finally, Byte arrays may be used to intentionally
  * reinterpret the bytes representing one arithmetic type as another.
@@ skipping 678 matching lines @@
    * is a view of another byte array, this constructor will throw
    * [ArgumentError] if the implicit starting position in the
    * "ultimately backing" byte array is not divisible by 8. In plain terms,
    * this constructor throws [ArgumentError] if the specified
    * region does not contain an integral number of "float64s," or if it
    * is not "float64-aligned."
    */
   external factory Float64List.view(ByteArray array,
                                     [int start = 0, int length]);
 }