RFR: 8255969: Improve java/io/BufferedInputStream/LargeCopyWithMark.java using jtreg tags [v2]

[Brian Burkhalter]

> Please review this change which would replace the use of a system property and a child process with updated jtreg tags.

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

  8255969: Improve java/io/BufferedInputStream/LargeCopyWithMark.java using jtreg tags

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/1083/files
  - new: https://git.openjdk.java.net/jdk/pull/1083/files/bf6249eb..a3346ff9

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=1083&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=1083&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 1 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/1083.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/1083/head:pull/1083

PR: https://git.openjdk.java.net/jdk/pull/1083