[foreign-memaccess+abi] RFR: 8312615: Ensure jdk_foreign tests pass on linux-x86 [v2]

[Jorn Vernee]

> Ensure that the jdk_foreign tests pass on linux-x86.
> 
> This is useful to ensure that there are no hard to fix issues (that would require API changes) when trying to use the linker API on a 32-bit platform. This is a good indication that the FFM API is ready for finalization.

Jorn Vernee has updated the pull request incrementally with one additional commit since the last revision:

  Use canonicalLayouts

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Changes:
  - all: https://git.openjdk.org/panama-foreign/pull/849/files
  - new: https://git.openjdk.org/panama-foreign/pull/849/files/e4323d0b..66e72f59

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=panama-foreign&pr=849&range=01
 - incr: https://webrevs.openjdk.org/?repo=panama-foreign&pr=849&range=00-01

  Stats: 13 lines in 1 file changed: 2 ins; 2 del; 9 mod
  Patch: https://git.openjdk.org/panama-foreign/pull/849.diff
  Fetch: git fetch https://git.openjdk.org/panama-foreign.git pull/849/head:pull/849

PR: https://git.openjdk.org/panama-foreign/pull/849