RFR: 8263561: Re-examine uses of LinkedList

Sun Mar 14 17:10:23 UTC 2021

The usage of `LinkedList` is senseless and can be replaced with either `ArrayList` or `ArrayDeque` which are both more compact and effective.

jdk:tier1 and jdk:tier2 are both ok

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Commit messages:
 - Remove remaining usages of LinkedList in java.base

Changes: https://git.openjdk.java.net/jdk/pull/2744/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=2744&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8263561
  Stats: 40 lines in 9 files changed: 0 ins; 2 del; 38 mod
  Patch: https://git.openjdk.java.net/jdk/pull/2744.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/2744/head:pull/2744

PR: https://git.openjdk.java.net/jdk/pull/2744