XD-531 upgrade to reactor M3
XD-886 Fix package tangle
- Moved DistributedJobService to dirt/plugins
- Moved ExpandedJobInfo to dirt/job
XD-Cleanup Removing all thread.sleeps from job tests.

The Job Test Code for the shell no long has to support file based validation of success.
Fix Job launch tests for XD-866
- Updated JobLaunch tests to use the fixes from XD-866
- Assert JobParameters sent via job launch command
Merge branch 'XD-531' of https://github.com/markfisher/spring-xd into markfisher-XD-531
XD-863 Serialization of Spring Batch Context Objects

* Add preliminary support for a series of batch listeners
* Add sample: https://github.com/spring-projects/spring-xd-samples/tree/master/batch-notifications

Jira: https://jira.springsource.org/browse/XD-863

XD-863 Code review changes
Merge branch 'master' of github.com:SpringSource/spring-xd