[code-reflection] Integrated: [hat] Runner for a single test

[Juan Fumero]

This patch extends the testing framework to execute single tests using the new hat launcher. 

Run the test suite:


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


Run a single test class:


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


Run a single test method:


java -cp hat/job.jar hat.java test ffi-opencl hat.test.TestMatMul#testMatrixMultiply1D

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Commit messages:
 - [hat] Update remote testing with the test-suite
 - [hat] Runner for a single test

Changes: https://git.openjdk.org/babylon/pull/617/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=617&range=00
  Stats: 26 lines in 2 files changed: 24 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/babylon/pull/617.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/617/head:pull/617

PR: https://git.openjdk.org/babylon/pull/617