RFR: 8273922: (fs) UserDefinedFileAttributeView doesn't handle file names that are just under the MAX_PATH limit (win) [v3]

[Brian Burkhalter]

> Modify `sun.nio.fs.WindowsUserDefinedFileAttributeView.join(WindowsPath,String)` to handle file names which exceed the limit.

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

  8273922: Make join() reject absolute path in 1nth in 'name' parameter

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/5594/files
  - new: https://git.openjdk.java.net/jdk/pull/5594/files/3b2b560a..5be22533

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=5594&range=02
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=5594&range=01-02

  Stats: 15 lines in 2 files changed: 9 ins; 1 del; 5 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5594.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5594/head:pull/5594

PR: https://git.openjdk.java.net/jdk/pull/5594