create a Interface that Actions can implement to indicat that they
should be passed from
the matrix parent to the indiviual configurations.
This means that the SVN Parameters can be passed to them.
Partial fix for [JENKINS-14619] also needs changes in SVN SCM plugin to
fix completely.

Developed by cjo9900

This value changes every time Jenkins starts, which allows HTTP clients to reliably wait for Jenkins restart.

Without this, I saw:

FAILURE: initializationError(hudson.model.CauseTest)
[INFO] java.lang.Exception: Field j must implement MethodRule
[INFO] 	at org.junit.runners.BlockJUnit4ClassRunner.validateRuleField(BlockJUnit4ClassRunner.java:188)
[INFO] 	at org.junit.runners.BlockJUnit4ClassRunner.validateFields(BlockJUnit4ClassRunner.java:183)
[INFO] 	at org.junit.runners.BlockJUnit4ClassRunner.collectInitializationErrors(BlockJUnit4ClassRunner.java:123)
[INFO] 	at org.junit.runners.ParentRunner.validate(ParentRunner.java:269)
[INFO] 	at org.junit.runners.ParentRunner.<init>(ParentRunner.java:66)
[INFO] 	at org.junit.runners.BlockJUnit4ClassRunner.<init>(BlockJUnit4ClassRunner.java:58)
[INFO] 	at org.junit.internal.builders.JUnit4Builder.runnerForClass(JUnit4Builder.java:13)
[INFO] 	at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)
[INFO] 	at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:29)
[INFO] 	at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)
[INFO] 	at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:24)
[INFO] 	at junit.framework.JUnit4TestAdapter.<init>(JUnit4TestAdapter.java:31)
[INFO] 	at junit.framework.JUnit4TestAdapter.<init>(JUnit4TestAdapter.java:24)
[INFO] 	at com.sun.maven.junit.LocalTestCaseRunner.buildMethodTestCase(LocalTestCaseRunner.java:121)
[INFO] 	at com.sun.maven.junit.LocalTestCaseRunner.buildTestCase(LocalTestCaseRunner.java:83)
[INFO] 	at com.sun.maven.junit.LocalTestCaseRunner.runTestCase(LocalTestCaseRunner.java:62)
[INFO] 	at com.sun.maven.junit.LocalTestCaseRunner.runTestCase(LocalTestCaseRunner.java:58)
[INFO] 	at sun.reflect.GeneratedMethodAccessor334.invoke(Unknown Source)
[INFO] 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
[INFO] 	at java.lang.reflect.Method.invoke(Method.java:597)
[INFO] 	at hudson.remoting.RemoteInvocationHandler$RPCRequest.perform(RemoteInvocationHandler.java:274)
[INFO] 	at hudson.remoting.RemoteInvocationHandler$RPCRequest.call(RemoteInvocationHandler.java:255)
[INFO] 	at hudson.remoting.RemoteInvocationHandler$RPCRequest.call(RemoteInvocationHandler.java:215)
[INFO] 	at hudson.remoting.UserRequest.perform(UserRequest.java:118)
[INFO] 	at hudson.remoting.UserRequest.perform(UserRequest.java:48)
[INFO] 	at hudson.remoting.Request$2.run(Request.java:270)
[INFO] 	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
[INFO] 	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
[INFO] 	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
[INFO] 	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
[INFO] 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
[INFO] 	at java.lang.Thread.run(Thread.java:662)

Cf. subversion-plugin 1fe9344, perforce-plugin 414cd9f.

[JENKINS-14495] Define Behaviour.specify.

Conflicts:
	changelog.html

integrating a fix that's made in remoting.

maven-hpi-plugin 1.88, so that jenkins-test-harness extensions are not spuriously shown in the UI from hudson-dev:run.

"Disabled" should be "mukou" (disabled system) not "shougai" (disabled person)

Converting to JUnit 4 thus fixing [JENKINS-14641] and also fixing test(Html)Escape which didn't ran previously because of wrong case