RFR: 8343823: (fs) Files.createLink: inconsistent behavior when creating link to symbolic link [v3]

[Brian Burkhalter]

> Add an API note to `java.nio.file.Files.createLink` to make explicit that the behavior when the target is a symbolic link is unspecified.

Brian Burkhalter has updated the pull request incrementally with one additional commit since the last revision:

  8343823: Move new sentence to before "Whether..."

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Changes:
  - all: https://git.openjdk.org/jdk/pull/22257/files
  - new: https://git.openjdk.org/jdk/pull/22257/files/10b46991..3db1cfb5

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=22257&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22257&range=01-02

  Stats: 6 lines in 1 file changed: 2 ins; 2 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/22257.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22257/head:pull/22257

PR: https://git.openjdk.org/jdk/pull/22257