[vector] Add non-masked Vector. intoByteArray accepting a byte order

[Paul Sandoz]

Hi

Please review the following that adds a missing non-masked Vector. intoByteArray accepting a byte order:

  http://cr.openjdk.java.net/~psandoz/panama/vector-intoByteArray-with-byte-order/webrev/ <http://cr.openjdk.java.net/~psandoz/panama/vector-intoByteArray-with-byte-order/webrev/>

Tests have also been expanded to operate over the byte order values.

Paul.