RFR: 8292758: put support for UNSIGNED5 format into its own header file

Fri Sep 2 00:00:16 UTC 2022

On Mon, 29 Aug 2022 18:20:42 GMT, John R Rose <jrose at openjdk.org> wrote:

> Refactor code from inside of CompressedStream into its own unit.
> 
> This code is likely to be used in future refactorings, such as JDK-8292818 (replace 96-bit representation for field metadata with variable-sized streams).
> 
> Add gtests.

This code passes tiers 1,2,3.

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PR: https://git.openjdk.org/jdk/pull/10067