[FIXED JENKINS-13349] Added a timeout strategy for no activity.
[JENKINS-13349] Added tests for NoActivityTimeOutStrategy.
[JENKINS-13349] messages for NoActivityTimeOutStrategy.
Close decorated OutputStream to release file handle.
[JENKINS-13349] Reset the timer only when line break is output.
Merge pull request #17 from ikedam/feature/JENKINS-13349_LastActivity

[JENKINS-13349] Added timeout detection from the last output log.