[code-reflection] RFR: [HAT] Test Engine Improved

[Juan Fumero]

This patch improves the test format and it ands a new exception to control when a test is meant to fail (unsupported). 

How to run?


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

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Commit messages:
 - Merge branch 'code-reflection' into hat/exceptions/tests
 - Hat tests format improved
 - [hat] Test report improved with unsuported and expected to fail tests
 - [hat] Rename Hat -> HAT in the test module

Changes: https://git.openjdk.org/babylon/pull/670/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=670&range=00
  Stats: 920 lines in 25 files changed: 454 ins; 331 del; 135 mod
  Patch: https://git.openjdk.org/babylon/pull/670.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/670/head:pull/670

PR: https://git.openjdk.org/babylon/pull/670