[lworld] Integrated: 8261393: [lworld] Adopt `primitive' as the modifier in declaration of identity free classes in lieu of `inline`

[Srikanth Adayapalam]

Compiler changes to accept primitive as the modifier in class declaration plus test changes across components necessitated by said change.

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Commit messages:
 - Fix white space problems
 - Fix white space problems
 - 8261393: [lworld] Adopt `primitive' as the modifier in declaration of identity free classes in lieu of `inline`

Changes: https://git.openjdk.java.net/valhalla/pull/328/files
 Webrev: https://webrevs.openjdk.java.net/?repo=valhalla&pr=328&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8261393
  Stats: 678 lines in 275 files changed: 40 ins; 41 del; 597 mod
  Patch: https://git.openjdk.java.net/valhalla/pull/328.diff
  Fetch: git fetch https://git.openjdk.java.net/valhalla pull/328/head:pull/328

PR: https://git.openjdk.java.net/valhalla/pull/328