[code-reflection] Integrated: fixup hatrun for life dependencies, allow nbody to default to HAT

[Gary Frost]

Switched nbody and life examples to use HAT (instead of jextracted opencl) for J1

Also fixed up hatrun if we specified `java-mt`.   It still needed OpenCL wrapper.

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Commit messages:
 - fixup hatrun for life dependencies, allow nbody to default to HAT

Changes: https://git.openjdk.org/babylon/pull/349/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=349&range=00
  Stats: 5 lines in 2 files changed: 4 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/babylon/pull/349.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/349/head:pull/349

PR: https://git.openjdk.org/babylon/pull/349