[FIXED JENKINS-22397] Allow a Trigger to be a DependencyDeclarer.
[FIXED JENKINS-22398] RobustMapConverter
Merge branch 'master' of git://github.com/jenkinsci/jenkins
Merge branch 'master' of git://github.com/jenkinsci/jenkins into Trigger-DependencyDeclarer-JENKINS-22397
Improved logging.
Show the user examples of when a cron tab list should actually run.
Comment.
Merge pull request #1168 from jglick/Trigger-DependencyDeclarer-JENKINS-22397

[JENKINS-22397] Allow a Trigger to be a DependencyDeclarer
Merge branch 'master' of git://github.com/jenkinsci/jenkins
[JENKINS-20769 JENKINS-20204] integrated remoting 2.35 in the core.
Merge commit '11458c956e64673d99a9dc2c05cfd5f9533b4e1b'
Create a ViewJob.ReloadThread only if and when someone has a ViewJob to be reloaded.
Merge REMERGE_HEAD into HEAD
[maven-release-plugin] prepare release jenkins-1.557
[maven-release-plugin] prepare for next development iteration
updated changelog for release
updated changelog as a part of the release
merged back the RC branch
[JENKINS-21018]

Being defensive.
[FIXED JENKINS-22442]

Avoid extracting war file under /tmp. When jar files and resource files disappear from under
us, all sorts of strange errors happen.