RFR: 8286206: Missing cases for RECORD [v2]

[Jan Lahoda]

> Adds handling of `ElementKind.RECORD` to JShell's code completion.

Jan Lahoda has updated the pull request incrementally with one additional commit since the last revision:

  Listing all possible elements as suggested.

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/9042/files
  - new: https://git.openjdk.java.net/jdk/pull/9042/files/9067d979..6a7e8bd3

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=9042&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=9042&range=00-01

  Stats: 5 lines in 1 file changed: 4 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/9042.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/9042/head:pull/9042

PR: https://git.openjdk.java.net/jdk/pull/9042