[code-reflection] Integrated: Align build artifacts maven, @hat/bld and hat/job.jar

[Gary Frost]

Aligning naming of artifacts across the three build mechanisms. 

Specifically `bash maven.bash` and `java @/hat/bld` generated `hat-extractions-opencl` whereas `java -cp hat/job.jar hat.java bld` created `hat-extracted-opencl`

This now allows us to run using `java @hat/run ffi-opencl nbody` or `java -cp hat/job.jar hat.java run ffi-opencl nbody`

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

Commit messages:
 - Align build artifacts maven, @hat/bld and  hat/job.jar

Changes: https://git.openjdk.org/babylon/pull/567/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=567&range=00
  Stats: 10 lines in 6 files changed: 0 ins; 0 del; 10 mod
  Patch: https://git.openjdk.org/babylon/pull/567.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/567/head:pull/567

PR: https://git.openjdk.org/babylon/pull/567