RFR: 8263561: Re-examine uses of LinkedList

[Сергей Цыпанов]

After I've renamed remove branch GitHub for some reason has closed original https://github.com/openjdk/jdk/pull/2744, so I've decided to recreate it.

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Commit messages:
 - Merge branch 'master' into 8263561
 - Merge branch 'master' into purge-linked-list
 - 8263561: Use sized constructor where reasonable
 - 8263561: Use interface List instead of particular type where possible
 - 8263561: Rename requestList -> requests
 - 8263561: Re-examine uses of LinkedList

Changes: https://git.openjdk.java.net/jdk/pull/4304/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=4304&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8263561
  Stats: 48 lines in 9 files changed: 0 ins; 2 del; 46 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4304.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4304/head:pull/4304

PR: https://git.openjdk.java.net/jdk/pull/4304