RFR: 8317795: Add an ImmutableBitSetPredicate variant for bitsets <= 128 elements [v2]

[Claes Redestad]

> Alternative to #16082
> 
> Name                             (unchanged) Cnt  Base   Error   Test   Error  Unit  Change
> URLEncodeDecode.testEncodeLatin1           0  15 2,066 ± 0,104  1,899 ± 0,007 ms/op   1,09x (p = 0,000*)
> URLEncodeDecode.testEncodeLatin1          75  15 0,934 ± 0,017  0,811 ± 0,014 ms/op   1,15x (p = 0,000*)
> URLEncodeDecode.testEncodeLatin1         100  15 0,433 ± 0,060  0,389 ± 0,007 ms/op   1,11x (p = 0,008*)
>   * = significant
>   ```

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

  Add test cases, make set sizing more explicit

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/16094/files
  - new: https://git.openjdk.org/jdk/pull/16094/files/bdcde89d..224053cd

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=16094&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=16094&range=00-01

  Stats: 12 lines in 1 file changed: 0 ins; 3 del; 9 mod
  Patch: https://git.openjdk.org/jdk/pull/16094.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16094/head:pull/16094

PR: https://git.openjdk.org/jdk/pull/16094