RFR: 8257450: Start of release updates for JDK 17 [v2]

Mon Dec 7 19:50:16 UTC 2020

On Mon, 7 Dec 2020 16:10:42 GMT, Jan Lahoda <jlahoda at openjdk.org> wrote:

> 
> 
> The langtools changes look fine to me. There were additions/changes to jcod files under `test/hotspot/jtreg/runtime/sealedClasses/` made under JDK-8246778, so these may need an update. Sorry about that.

After a merge, the tests in that directory still pass. Will keep merging in new changes and do at least more more test run before pushing. Thanks.

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PR: https://git.openjdk.java.net/jdk/pull/1531