<i18n dev> RFR: 8363972: Loose matching of dash/minusSign in number parsing [v5]

[Naoto Sato]

> Enabling lenient minus sign matching when parsing numbers. In some locales, e.g. Finnish, the default minus sign is the Unicode "Minus Sign" (U+2212), which is not the "Hyphen Minus" (U+002D) that users type in from keyboard. Thus the parsing of user input numbers may fail. This change utilizes CLDR's `parseLenient` element for minus signs and loosely matches them with the hyphen-minus so that user input numbers can parse. As this is a behavioral change, a corresponding CSR has been drafted.

Naoto Sato has updated the pull request incrementally with two additional commits since the last revision:

 - Spec update
 - Supplementary/CanonEq tests

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Changes:
  - all: https://git.openjdk.org/jdk/pull/26580/files
  - new: https://git.openjdk.org/jdk/pull/26580/files/38f3286f..d4bd416a

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=26580&range=04
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=26580&range=03-04

  Stats: 36 lines in 3 files changed: 23 ins; 0 del; 13 mod
  Patch: https://git.openjdk.org/jdk/pull/26580.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/26580/head:pull/26580

PR: https://git.openjdk.org/jdk/pull/26580