Trivial patch to move some code that accesses javac-internals into the `WorkArounds` class.
------------- Commit messages: - JDK-8261623: reference to javac internals in Extern class Changes: https://git.openjdk.java.net/jdk/pull/2537/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=2537&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8261623 Stats: 24 lines in 2 files changed: 11 ins; 12 del; 1 mod Patch: https://git.openjdk.java.net/jdk/pull/2537.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/2537/head:pull/2537 PR: https://git.openjdk.java.net/jdk/pull/2537
