It's dangerous, deprecated, and was removed in 2.12.0-M1.
See https://github.com/scala/scala/pull/4140.
`ListBuffer#toList` has equivalent performance,
except it actually returns an immutable copy(-on-write).
When running the 'update' task in bash, the output is all collapsed onto one line.
On Windows, even using an ANSI capable shell, running 'update' spams the console.
Tested with dash in Ubuntu; ANSICON, Console2 and ConsoleZ in Windows.
* Create a new sbt.compiler.javac package
* Create new interfaces to control running `javac` and `javadoc` whether forked or local.
* Ensure new interfaces make use of `xsbti.Reporter`.
* Create new method on `xsbti.compiler.JavaCompiler` which takes a `xsbti.Reporter`
* Create a new mechanism to parse (more accurately) Warnings + Errors, to distinguish the two.
* Ensure older xsbti.Compiler implementations still succeed via catcing NoSuchMethodError.
* Feed new toolchain through sbt.actions.Compiler API via dirty hackery until we can break things in sbt 1.0
* Added a set of unit tests for parsing errors from Javac/Javadoc
* Added a new integration test for hidden compilerReporter key, including testing threading of javac reports.
Fixes#875, Fixes#1542, Related #1178 could be looked into/cleaned up.