RFR: 8204256: improve jlink error message to report unsupported class file format

Wed Sep 30 22:24:23 UTC 2020

On Wed, 30 Sep 2020 22:14:43 GMT, Ian Graves <igraves at openjdk.org> wrote:

> Alternatively we could change the existing exception message path and modify it so it's in line with the simpler
> solution as well? That makes sense to me, anyway.

Sounds reasonable to me.

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PR: https://git.openjdk.java.net/jdk/pull/409