RFR: JDK-8295391: Add discussion of binary <-> decimal conversion issues [v8]

[Joe Darcy]

> Add discussion of some of the common pitfalls related to decimal <-> binary conversion.

Joe Darcy has updated the pull request incrementally with one additional commit since the last revision:

  Small clean ups.

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Changes:
  - all: https://git.openjdk.org/jdk/pull/16566/files
  - new: https://git.openjdk.org/jdk/pull/16566/files/d18ff5cf..3730f394

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=16566&range=07
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=16566&range=06-07

  Stats: 11 lines in 1 file changed: 1 ins; 1 del; 9 mod
  Patch: https://git.openjdk.org/jdk/pull/16566.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16566/head:pull/16566

PR: https://git.openjdk.org/jdk/pull/16566