RFR: 8328812: Update and move siphash license

[Bernd]

On Fri, 22 Mar 2024 15:18:29 GMT, Jesper Wilhelmsson <jwilhelm at openjdk.org> wrote:

> Updated and moved the license file.

src/hotspot/share/legal/siphash.md line 9:

> 7:    Copyright (c) 2012-2021 Jean-Philippe Aumasson
> 8:    <jeanphilippe.aumasson at gmail.com>
> 9:    Copyright (c) 2012-2014 Daniel J. Bernstein <djb at cr.yp.to>

Why would you remove a author or year range?

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PR Review Comment: https://git.openjdk.org/jdk/pull/18455#discussion_r1536867069