[crac] RFR: Run native CRaC checks after failed beforeCheckpoint

[Larry-N]

On Fri, 28 Jan 2022 12:00:01 GMT, Anton Kozlov <akozlov at openjdk.org> wrote:

> After checkpoint failed at the Java level, it's worth to make a "dry-run" checkpoint at the native state: check file descriptors, process -XX:+CRHeapDumpOnCheckpointException, etc.
> 
> The patch also removes unused parameter of `checkpoint_restore(FdsInfo* fds)`

Marked as reviewed by Larry-N at github.com (no known OpenJDK username).

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PR: https://git.openjdk.java.net/crac/pull/11