RFR: 8275293: A change done with JDK-8268764 mismatches the java.rmi.server.ObjID.hashCode spec

[Сергей Цыпанов]

It looks like we cannot use `Long.hashCode(long)` for `java.rmi.server.ObjID.hashCode()` due to JavaDoc: https://docs.oracle.com/en/java/javase/17/docs/api/java.rmi/java/rmi/server/ObjID.html#hashCode().

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Commit messages:
 - 8275293: A change done with JDK-8268764 mismatches the java.rmi.server.ObjID.hashCode spec

Changes: https://git.openjdk.java.net/jdk/pull/5963/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=5963&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8275293
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5963.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5963/head:pull/5963

PR: https://git.openjdk.java.net/jdk/pull/5963