[foreign-memaccess+abi] RFR: 8291639: Improve the ability to visualize a MemorySegment in human readable forms [v18]

[Per Minborg]

On Mon, 5 Jun 2023 14:44:41 GMT, Jorn Vernee <jvernee at openjdk.org> wrote:

>> Per Minborg has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Clean up code
>
> test/jdk/java/foreign/TestRecordMapper.java line 767:
> 
>> 765: 
>> 766:     @Test
>> 767:     public void inspectMemory() {
> 
> This also doesn't use `recordMapper`

As the original bug mentions it is desirable to be able to convert to hex, this test shows how.

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PR Review Comment: https://git.openjdk.org/panama-foreign/pull/833#discussion_r1227997251