RFR: 8307976: (fs) Files.createDirectories(dir) returns dir::toAbsolutePath instead of dir [v3]

[Brian Burkhalter]

> Return `dir`, not `dir::toAbsolutePath`.

Brian Burkhalter has updated the pull request incrementally with two additional commits since the last revision:

 - 8307976: Modify assertion message
 - 8307976: Change test assertion

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/13959/files
  - new: https://git.openjdk.org/jdk/pull/13959/files/4ea03a30..d8d92242

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=13959&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=13959&range=01-02

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/13959.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13959/head:pull/13959

PR: https://git.openjdk.org/jdk/pull/13959