RFR: 8252830: Added missing javadoc comments in java.rmi

[Roger Riggs]

8252830: Added missing javadoc comments in java.rmi

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Commit messages:
 - Added missing comments in java.rmi

Changes: https://git.openjdk.java.net/jdk/pull/79/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=79&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8252830
  Stats: 28 lines in 4 files changed: 27 ins; 1 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/79.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/79/head:pull/79

PR: https://git.openjdk.java.net/jdk/pull/79