RFR: 8253500: [REDO] JDK-8253208 Move CDS related code to a separate class

[Erik Joelsson]

On Wed, 23 Sep 2020 23:05:59 GMT, Yumin Qi <minqi at openjdk.org> wrote:

> This patch is a REDO for JDK-8253208 which was backed out since it caused runtime/cds/DeterministicDump.java failed,
> see JDK-8253495. Since the failure is another issue and only triggered by this patch, the test case now is put on
> ProblemList.txt. The real root cause for the failure is detailed in JDK-8253495.  When JDK-8253208 was backed out,
> CDS.java remained without removed from that patch (see JDK-8253495 subtask), so this patch does not include CDS.java
> (this is why you will see CDS.c without CDS.java in this patch).  Tests tier1-4 passed.

Build changes ok.

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PR: https://git.openjdk.java.net/jdk/pull/327