RFR: JDK-6725221 Standardize obtaining boolean properties with defaults [v2]

[Mark Powers]

> JDK-6725221 Standardize obtaining boolean properties with defaults

Mark Powers has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains six commits:

 - Alan and Jamil comments
 - Merge
 - reverse true.equals and false.equals changes
 - Merge
 - Merge
 - first iteration

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Changes: https://git.openjdk.java.net/jdk/pull/8559/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=8559&range=01
  Stats: 9 lines in 3 files changed: 1 ins; 1 del; 7 mod
  Patch: https://git.openjdk.java.net/jdk/pull/8559.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/8559/head:pull/8559

PR: https://git.openjdk.java.net/jdk/pull/8559