RFR: 8371052: Update libFFI to 3.5.2

[Alexander Matveev]

- Updated libFFI to 3.5.2.
- Tested on all platforms.
- No additional changes are done.

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Commit messages:
 - 8371052: Update libFFI to 3.5.2 [v2]
 - 8371052: Update libFFI to 3.5.2

Changes: https://git.openjdk.org/jfx/pull/1962/files
  Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=1962&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8371052
  Stats: 253 lines in 24 files changed: 183 ins; 12 del; 58 mod
  Patch: https://git.openjdk.org/jfx/pull/1962.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1962/head:pull/1962

PR: https://git.openjdk.org/jfx/pull/1962