java.lang.NullPointerException
	at hudson.model.queue.FutureImpl.cancel(FutureImpl.java:78)
	at com.tikal.jenkins.plugins.multijob.MultiJobBuilder.perform(MultiJobBuilder.java:156)
	at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
	at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:781)
	at hudson.model.Build$BuildExecution.build(Build.java:199)
	at hudson.model.Build$BuildExecution.doRun(Build.java:160)
	at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:562)
	at com.tikal.jenkins.plugins.multijob.MultiJobBuild$MultiJobRunnerImpl.run(MultiJobBuild.java:70)
	at hudson.model.Run.execute(Run.java:1665)
	at hudson.model.Run.run(Run.java:1612)
	at com.tikal.jenkins.plugins.multijob.MultiJobBuild.run(MultiJobBuild.java:63)
	at hudson.model.ResourceController.execute(ResourceController.java:88)
	at hudson.model.Executor.run(Executor.java:230)

Merge branch 'fork_fix-fae-exception' of github.com:marco-miller/jenkins into marco-miller-fork_fix-fae-exception

Fix javadoc warning in Combination

[FIXED JENKINS-20615] - Fixed variable reference in TestResult/index_ru....

Resolves https://issues.jenkins-ci.org/browse/JENKINS-20615Signed-off-by: NOleg Nenashev <nenashev@synopsys.com>

Implemented the hook

Removed import that was only used to attempt to satisfy the javadoc
reference to the class.

Replaced the javadoc reference to an inner class with a fully
qualified reference to the same inner class.

in preparation of introducing other hooks

[FIXED JENKINS-7285] Fix regression from 1.536

Integrated the fix in Stapler.

Added NamingThreadFactory to ensure that all code creating thread pool executors was marking the threads.
Otherwise we get a bunch of pool-17-thread-5 with no clue who created so many threads or why.
Also simplifies existing code which previously had to write one-off ThreadFactory implementations just to set a name.

[JENKINS-19622] Merged #989: allow background tasks to run simultaneously, preventing task blockage.