RFR: 8336895: BufferedReader doesn't read full \r\n line ending when it doesn't fit in buffer [v5]

[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: Modify "More than one instance" paragraphs and convert to API notes

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Changes:
  - all: https://git.openjdk.org/jdk/pull/20320/files
  - new: https://git.openjdk.org/jdk/pull/20320/files/d6831f92..503d123a

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=20320&range=04
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=20320&range=03-04

  Stats: 17 lines in 4 files changed: 0 ins; 1 del; 16 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