[lworld] RFR: 8279428: [lworld] Revalue ACC_PRIMITIVE to be 0x800 to align with draft JVMS [v2]

[Srikanth Adayapalam]

> Change ACC_PRIMITIVE to be 0x800 across components sources and tests

Srikanth Adayapalam has updated the pull request incrementally with one additional commit since the last revision:

  Post review, clarify code and eliminate latent bug that doesn't surface only
  because of the happy coincidence of values being equals between two class file
  constants.

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Changes:
  - all: https://git.openjdk.java.net/valhalla/pull/593/files
  - new: https://git.openjdk.java.net/valhalla/pull/593/files/accb6894..ac1817d0

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=valhalla&pr=593&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=valhalla&pr=593&range=00-01

  Stats: 14 lines in 2 files changed: 6 ins; 0 del; 8 mod
  Patch: https://git.openjdk.java.net/valhalla/pull/593.diff
  Fetch: git fetch https://git.openjdk.java.net/valhalla pull/593/head:pull/593

PR: https://git.openjdk.java.net/valhalla/pull/593