RFR: 8261522: [PPC64] AES intrinsics write beyond the destination array

[Martin Doerr]

I'd like to replace the read-modify-write implementation from aescrypt_encryptBlock / aescrypt_decryptBlock stubs. IT can cause severe problems (see bug description).

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

Commit messages:
 - 8261522: [PPC64] AES intrinsics write beyond the destination array

Changes: https://git.openjdk.java.net/jdk/pull/2514/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=2514&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8261522
  Stats: 48 lines in 1 file changed: 10 ins; 16 del; 22 mod
  Patch: https://git.openjdk.java.net/jdk/pull/2514.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/2514/head:pull/2514

PR: https://git.openjdk.java.net/jdk/pull/2514