[lworld] RFR: 8374810: [lworld] Generate COH archives [v2]

[Coleen Phillimore]

> This change both enables the UseCompactObjectHeaders archives for valhalla and fixes the test that looks for the archives.  Testing with tier1-3 with --enable-preview and -XX:+UseCompactObjectHeaders.

Coleen Phillimore has updated the pull request incrementally with one additional commit since the last revision:

  Rename CDS archive from valhalla to preview.

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

Changes:
  - all: https://git.openjdk.org/valhalla/pull/1871/files
  - new: https://git.openjdk.org/valhalla/pull/1871/files/486bc1f6..cccbb21f

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=valhalla&pr=1871&range=01
 - incr: https://webrevs.openjdk.org/?repo=valhalla&pr=1871&range=00-01

  Stats: 10 lines in 3 files changed: 0 ins; 0 del; 10 mod
  Patch: https://git.openjdk.org/valhalla/pull/1871.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1871/head:pull/1871

PR: https://git.openjdk.org/valhalla/pull/1871