RFR: 8375585: Test java/lang/ProcessBuilder/PipelineLeaksFD.java failed [v3]

[Roger Riggs]

> Revised test to explicitly compare file descriptor info only from parent and child.
> If additional fd's are present in the child, it is hard to know their origin but they do not necessarily indicate a bug in Process launch.
>  
> Remove from the problem list.

Roger Riggs has updated the pull request incrementally with one additional commit since the last revision:

  Removed use of count.

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/29530/files
  - new: https://git.openjdk.org/jdk/pull/29530/files/0cf0611f..a3e8b8b7

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=29530&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=29530&range=01-02

  Stats: 4 lines in 1 file changed: 0 ins; 3 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/29530.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29530/head:pull/29530

PR: https://git.openjdk.org/jdk/pull/29530