RFR: Update JOpt Simple to 5.0.4

[Oliver Eikemeier]

JMH is incompatible with a recent JOpt Simple, which is easy to pull in as a dependency.

Demonstration of the problem: https://github.com/eikemeier/jmh-test

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Commit messages:
 - Update JOpt Simple to 5.0.4

Changes: https://git.openjdk.java.net/jmh/pull/49/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jmh&pr=49&range=00
  Stats: 589 lines in 29 files changed: 50 ins; 0 del; 539 mod
  Patch: https://git.openjdk.java.net/jmh/pull/49.diff
  Fetch: git fetch https://git.openjdk.java.net/jmh pull/49/head:pull/49

PR: https://git.openjdk.java.net/jmh/pull/49