[jdk17] RFR: 8268349: Provide clear run-time warnings about Security Manager deprecation [v4]

[Weijun Wang]

On Thu, 17 Jun 2021 14:55:02 GMT, Weijun Wang <weijun at openjdk.org> wrote:

>> More loudly and precise warning messages when a security manager is either enabled at startup or installed at runtime.
>> 
>> This is new PR for the `openjdk/jdk17` repo copied from https://github.com/openjdk/jdk/pull/4400. A new commit is added.
>
> Weijun Wang has updated the pull request incrementally with one additional commit since the last revision:
> 
>   add bug id into a test

A new commit. Much more exact checking of various warning messages.

-------------

PR: https://git.openjdk.java.net/jdk17/pull/13