RFR: 8256489: Make gtest for long path names on Windows more resilient in the presence of virus scanners [v2]

[Ralf Schmelter]

> Hi,
> 
> a virus scanner can keep a file open on Windows, so that a DeleteFile command returns successful, but the file is actually not removed when the call returns. In the gtest for long path names on Windows this can lead to failures when a directory is tried to be removed, but the file inside it is still kept by the virus scanner.
> 
> Since this is an error which only occurs very infrequently, we just retry the deletion a few times. 
> 
> Best regards,
> Ralf

Ralf Schmelter has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains two additional commits since the last revision:

 - Incorporated review findings from David Holmes
 - Make directory removal in path test more resilient

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/1380/files
  - new: https://git.openjdk.java.net/jdk/pull/1380/files/36c88be1..853bd30c

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=1380&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=1380&range=00-01

  Stats: 72406 lines in 365 files changed: 69913 ins; 1587 del; 906 mod
  Patch: https://git.openjdk.java.net/jdk/pull/1380.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/1380/head:pull/1380

PR: https://git.openjdk.java.net/jdk/pull/1380