RFR: 8272863: Replace usages of Collections.sort with List.sort call in public java modules

[Andrey Turbanov]

Collections.sort is just a wrapper, so it is better to use an instance method directly.

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Commit messages:
 - [PATCH] Replace usages of Collections.sort with List.sort call in public java modules

Changes: https://git.openjdk.java.net/jdk/pull/5229/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=5229&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8272863
  Stats: 27 lines in 10 files changed: 0 ins; 8 del; 19 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5229.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5229/head:pull/5229

PR: https://git.openjdk.java.net/jdk/pull/5229