RFR: 8260554: Missing copyright headers on some Lanai files

[Jayathirth D V]

On Wed, 27 Jan 2021 19:35:56 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

> 1. Add missing copyright headers
> 2. Revert changes to files that only differ from jdk/master in copyright years or whitespace changes
> 3. Update copyright years to 2021

src/java.desktop/macosx/native/libawt_lwawt/java2d/metal/EncoderManager.h line 2:

> 1: /*
> 2:  * Copyright (c) 2019, 2021, Oracle and/or its affiliates. All rights reserved.

Do we include starting year for files which were added in JDK projects like Lanai when we send out common review for OpenJDK? Is this a common practice?

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PR: https://git.openjdk.java.net/lanai/pull/160