Tweaked a log message.
Removed unnecessary casting.
Incremental java compilation. Some refactoring before changing the code so that we can avoid full output classes scan after compilation.
Incremental java compilation. Avoided scanning and updating dependency info when the recompilation was not necessary.
Made the incremental compilation fixture more generic so that it can be reused.
Started using a common fixture for java incremental compilation. Some rename job.
Added some docs to the fixture.
Incremental java compilation. Reworked the integ test coverage. Some rename jobs in the fixture code.
Fixed minor logging issues.
Commented out one of the tests until I figure out the problem.
Merge branch 'release'

Conflicts:
	subprojects/docs/src/docs/release/notes.md
Checkstyle.
Removed the static methods from GradleLauncher.
Removed a few methods from GradleLauncher, that are now unused.
Changed the contract of GradleLauncherFactory.newInstance() so that the caller is responsible for cleaning up when finished.
Make sure test fixtures clean up GradleLauncher properly.
Changed DefaultServiceRegistry so that it is-a Closeable.
Moved clean up of build scope services from a BuildListener implementation to GradleLauncher.stop(). This means that other listener implementations can use services and domain objects safely.
Removed BuildController.getLauncher(). Can now just get hold of the Gradle instance.
The tooling api actions don't need to use listener contortions to do things with the build any more.