RFR: 8324643: [lworld] remove ACC_VALUE flag and the 'identity' modifier [v3]

[Vicente Romero]

> removing flag ACC_VALUE and identity modifier and related refactorings

Vicente Romero has updated the pull request incrementally with one additional commit since the last revision:

  additional changes

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Changes:
  - all: https://git.openjdk.org/valhalla/pull/977/files
  - new: https://git.openjdk.org/valhalla/pull/977/files/7182250a..8a09da9b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=valhalla&pr=977&range=02
 - incr: https://webrevs.openjdk.org/?repo=valhalla&pr=977&range=01-02

  Stats: 117 lines in 3 files changed: 1 ins; 0 del; 116 mod
  Patch: https://git.openjdk.org/valhalla/pull/977.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/977/head:pull/977

PR: https://git.openjdk.org/valhalla/pull/977