RFR: 8288667: Reduce runtime of java.text microbenchmarks [v2]

[Claes Redestad]

> - Refactor micro using a range of parameters to a simpler benchmark that tests different values in one pass
> - Reduce iterations and their runtimes, but add forks (important to be able to detect run-to-run variation anomalies)
> 
> Just one micro modified in this package, but reduces total runtime from 16 minutes to ~1 minute

Claes Redestad has updated the pull request incrementally with one additional commit since the last revision:

  Add OperationsPerInvocation

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/9198/files
  - new: https://git.openjdk.org/jdk/pull/9198/files/28016417..a1284b68

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=9198&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=9198&range=00-01

  Stats: 2 lines in 1 file changed: 2 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/9198.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9198/head:pull/9198

PR: https://git.openjdk.org/jdk/pull/9198