RFR: 8333265: De-duplicate method references in java.util.stream.FindOps [v2]

[Claes Redestad]

> Extracting duplicate method references to static field reduce proxy class spinning and loading. In this case 2 less classes loaded when using `findAny()` on each type of stream.

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

  @ExE-Boss review

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Changes:
  - all: https://git.openjdk.org/jdk/pull/19477/files
  - new: https://git.openjdk.org/jdk/pull/19477/files/cff6d034..a223e608

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=19477&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=19477&range=00-01

  Stats: 40 lines in 1 file changed: 11 ins; 0 del; 29 mod
  Patch: https://git.openjdk.org/jdk/pull/19477.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19477/head:pull/19477

PR: https://git.openjdk.org/jdk/pull/19477