[hat] Enable vendor information to be pass to the code-generators

[jjfumero]

This PR enables vendor information to be used in the code generators.

All tests must pass:

java -cp hat/job.jar hat.java test-suite ffi-opencl
java -cp hat/job.jar hat.java test-suite ffi-cuda

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[openjdk]

@jjfumero This change now passes all automated pre-integration checks.

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[hat] Enable vendor information to be pass to the code-generators

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[jjfumero]

/template append

[openjdk]

@jjfumero The pull request template has been appended to the pull request body

[grfrost]

We created a memorySegment just for the Vendor Name?

Maybe we can create a MemorSegment with some structure. To receive other vendor info later.

So maybe a MemorySegment containing a list of Name/Value/Type triples

We can a MappedMemorySegment then for all values....

[grfrost]

I think we might take this opportunity to provide a mechanism for retrieving future vendor/device/status information using a single MemorySegment mapped to an IfaceMapped segment.

[mlbridge]

Webrevs

• 01: Full (390ea244)
• 00: Full (3c54c4d6)