RFR: 8258839: Remove JVM option ExitVMOnVerifyError

[Daniel D.Daugherty]

On Wed, 23 Dec 2020 18:25:18 GMT, Daniel D. Daugherty <dcubed at openjdk.org> wrote:

>> Please review this change to replace the JVM ExitVMOnVerifyError option with asserts.  The change was tested with tiers 1 and 2 on Linux, Mac OS, and Windows, and tiers 3-5 on Linux x64.
>> 
>> Thanks, Harold
>
> Changes requested by dcubed (Reviewer).

Minor additional cleanups.

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PR: https://git.openjdk.java.net/jdk/pull/1882