[FIXED JENKINS-22769] ItemListener callbacks should run as SYSTEM since they sometimes do ACL-checked calls.

https://bugs.openjdk.java.net/browse/JDK-6933067 claims to be fixed as of Java 6, our baseline.

Assertions are only for cases where you believe the failure of the condition is impossible.
For cases where external code might mistakenly make an incorrect call, throw an exception.

Update the link to the Jetty documentation in realm.properties

The actual fix is made in 040b7d40
through winp.

This version checks the critical flag of the process, as killing such a
process results in BSoD.

Update package name reference.

Update package name reference from Hudson to Jenkins.

Explicitly set the umask for daemon in Debian init script

As discovered by danielbeck in #jenkins, daemon(1) does not inherit the parent
process's umask. The --umask flag is the means to set it explicitly.

[FIXED JENKINS-7478] Correct Line Endings for Batch Files

Updating javadoc of Plugin, LabelAtomProperty, GlobalConfiguration with ...

[FIXED JENKINS-15576] Label's Load Statistics queue length based on label assigned to job rather than to item in build queue.

Integrated the fix in remoting to Jenkins 1.580.