RFR: 8315891: java/foreign/TestLinker.java failed with "error occurred while instantiating class TestLinker: null" [v2]

[Maurizio Cimadamore]

> This PR adds a privileged block surrounding the request to load the fallback linker library in LibFallback.
> The lack of this block is causing test failures when platforms using the fallback linker are tested using a security manager.

Maurizio Cimadamore has updated the pull request incrementally with one additional commit since the last revision:

  Fix library name

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Changes:
  - all: https://git.openjdk.org/jdk/pull/15633/files
  - new: https://git.openjdk.org/jdk/pull/15633/files/847a7461..e6d96918

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=15633&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=15633&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/15633.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15633/head:pull/15633

PR: https://git.openjdk.org/jdk/pull/15633