RFR: 8305107: Emoji related binary properties in RegEx [v2]

[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:

  indentation

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/13314/files
  - new: https://git.openjdk.org/jdk/pull/13314/files/7a8a821c..41cfe460

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=13314&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=13314&range=00-01

  Stats: 106 lines in 1 file changed: 2 ins; 3 del; 101 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