[code-reflection] RFR: Rename compute/kernel interfaces.

[Paul Sandoz]

Rename `QuotableComputeContextConsumer` to `ComputeConsumer` and `QuotableKernelContextConsumer` to `KernelConsumer`. Since we don't have `Quotable` anymore that prefix is redundant. I also tried to reduce the name further because they, or mainly the `ComputeConsumer`, may need to be referred to in an annotated cast expression.

Using the names `Compute` and `Kernel` would be more terse but at least the former conflicted with other code.

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

Commit messages:
 - Merge remote-tracking branch 'upstream/code-reflection' into hat-compute-iface
 - Rename compute/kernel interfaces.

Changes: https://git.openjdk.org/babylon/pull/739/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=739&range=00
  Stats: 113 lines in 25 files changed: 3 ins; 7 del; 103 mod
  Patch: https://git.openjdk.org/babylon/pull/739.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/739/head:pull/739

PR: https://git.openjdk.org/babylon/pull/739