[lworld] RFR: 8320437: [lworld] Adding internal null-restricted storage API points [v2]

[Frederic Parain]

> Adding internal null-restricted storage API points

Frederic Parain has updated the pull request incrementally with one additional commit since the last revision:

  Fix wrong class type in test

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Changes:
  - all: https://git.openjdk.org/valhalla/pull/947/files
  - new: https://git.openjdk.org/valhalla/pull/947/files/afe34de2..bb704830

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=valhalla&pr=947&range=01
 - incr: https://webrevs.openjdk.org/?repo=valhalla&pr=947&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/valhalla/pull/947.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/947/head:pull/947

PR: https://git.openjdk.org/valhalla/pull/947