RFR: 8261168: Convert javadoc tool to use Stream.toList() [v4]

[Ian Graves]

> 8261168: Convert javadoc tool to use Stream.toList()

Ian Graves has updated the pull request incrementally with one additional commit since the last revision:

  Replacing one additional Collections.toList() with an explicit toCollection() call

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/3612/files
  - new: https://git.openjdk.java.net/jdk/pull/3612/files/0c2cf58a..978f35da

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=3612&range=03
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=3612&range=02-03

  Stats: 7 lines in 1 file changed: 1 ins; 3 del; 3 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3612.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3612/head:pull/3612

PR: https://git.openjdk.java.net/jdk/pull/3612