RFR: 8275771: JDK source code contains redundant boolean operations in jdk.compiler and langtools [v2]

[Vicente Romero]

> Hi,
> 
> Please review this PR which is basically rewriting some redundant boolean expressions in the compiler.
> 
> TIA

Vicente Romero has updated the pull request incrementally with one additional commit since the last revision:

  addressing review comments

-------------

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/6599/files
  - new: https://git.openjdk.java.net/jdk/pull/6599/files/4fccdf40..012779d4

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=6599&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=6599&range=00-01

  Stats: 8 lines in 2 files changed: 1 ins; 4 del; 3 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6599.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6599/head:pull/6599

PR: https://git.openjdk.java.net/jdk/pull/6599