RFR: 8305107: Emoji related binary properties in RegEx [v3]

[Naoto Sato]

> Introducing new regex constructs that match those 6 new Unicode Emoji properties implemented in the `Character` class (https://bugs.openjdk.org/browse/JDK-8303018). A corresponding CSR has been drafted.

Naoto Sato has updated the pull request incrementally with one additional commit since the last revision:

  Revert static import of Character.*

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Changes:
  - all: https://git.openjdk.org/jdk/pull/13314/files
  - new: https://git.openjdk.org/jdk/pull/13314/files/41cfe460..5fd43d9e

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=13314&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=13314&range=01-02

  Stats: 187 lines in 1 file changed: 1 ins; 4 del; 182 mod
  Patch: https://git.openjdk.org/jdk/pull/13314.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13314/head:pull/13314

PR: https://git.openjdk.org/jdk/pull/13314