[foreign-memaccess+abi] RFR: 8292174: Add unaligned layouts to ValueLayout [v3]

[Maurizio Cimadamore]

On Thu, 11 Aug 2022 11:24:49 GMT, Per Minborg <duke at openjdk.org> wrote:

>> The layouts are placed in a special `Unaligned` class. This prevents the classes to be seen on the top level (for less cluttering) and allows lazy initialization of items that are likely not so much used.
>
> Per Minborg has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Fix test and remove unaligned of size 8 bits

Looks good

-------------

Marked as reviewed by mcimadamore (Committer).

PR: https://git.openjdk.org/panama-foreign/pull/705