RFR: 8356493: (fs) SecureDirectoryStream missing some capabilities [v2]

[Brian Burkhalter]

> Add several methods to `java.nio.file.SecureDirectoryStream`.

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

  8356493: Path -> T for parameters and return values

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Changes:
  - all: https://git.openjdk.org/jdk/pull/26950/files
  - new: https://git.openjdk.org/jdk/pull/26950/files/8667bca0..b59c3f6c

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=26950&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=26950&range=00-01

  Stats: 7 lines in 1 file changed: 1 ins; 0 del; 6 mod
  Patch: https://git.openjdk.org/jdk/pull/26950.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/26950/head:pull/26950

PR: https://git.openjdk.org/jdk/pull/26950