RFR: 8327095: (ch) java/nio/channels/AsyncCloseAndInterrupt.java: improve error message when mkfifo fails [v6]

[Brian Burkhalter]

> Add to the error message of the `IOException` thrown when the `mkfifo` command fails:
> 
> 1. the absolute path of the FIFO which was to have been created;
> 2. the text read from the standard error stream of the process in which `mkfifo` was executed.

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

  8327095: Use FFM instead of ProcessTools

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/18072/files
  - new: https://git.openjdk.org/jdk/pull/18072/files/0ae84063..dd7c78e2

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18072&range=05
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18072&range=04-05

  Stats: 38 lines in 1 file changed: 24 ins; 9 del; 5 mod
  Patch: https://git.openjdk.org/jdk/pull/18072.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18072/head:pull/18072

PR: https://git.openjdk.org/jdk/pull/18072