RFR: 8336895: BufferedReader doesn't read full \r\n line ending when it doesn't fit in buffer [v4]

[Brian Burkhalter]

> Add some verbiage stating that two buffered readers or input streams should not be used to read from the same reader or input stream, respectively.

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

  8336895: "  Doing" -> " Doing" and add some {@code} tags

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Changes:
  - all: https://git.openjdk.org/jdk/pull/20320/files
  - new: https://git.openjdk.org/jdk/pull/20320/files/268b5eec..d6831f92

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=20320&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=20320&range=02-03

  Stats: 33 lines in 4 files changed: 3 ins; 0 del; 30 mod
  Patch: https://git.openjdk.org/jdk/pull/20320.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20320/head:pull/20320

PR: https://git.openjdk.org/jdk/pull/20320