Remove the shadow copy of buildOn from MavenBuild.java and move the setter to
AbstractBuild to allow MavenModuleSetBuild.java to continue to set the
build node.

following up tweaks to the previous commit, and explaining what we don't do so that future versions don't inadvertently mess up them

Add displayName and description as further optional tags that can be submitted as part of an External run

Use stock gmaven plugin to achieve this

fixed serving of JARs if running with hudson-dev:run which was broken since https://github.com/jenkinsci/jenkins/commit/a376eb5832a75d4fb840a9088b37a988582b0965

Ignore null reporters field in MavenBuild$RunnerImpl.post2 and avoid a NPE.
Thanks !

The NPE can occur if a build fails during checkout and hence the run phase
never gets called. See JENKINS-10831 for an example of this happening.

- Added a RenameListener to Fingerprint. When the listener is invoked for
  renamed projects, it will iterate over all the builds of the project looking
  for fingerprint actions. If the build was the originator of the fingerprint,
  the buildPtr is updated; (had to make the name non-final to allow for this).
  If the build is the consumer of a fingerprint, the usages are updated.

   core/src/main/java/hudson/model/Fingerprint.java

- Expose the fingerprint data inline with the build data in the remote API.
  The renaming code also uses this method as a convenient way to get the
  fingerprints for a build.

   core/src/main/java/hudson/model/AbstractBuild.java

- Test.

   test/src/test/java/hudson/tasks/FingerprinterTest.java

happen.

This happens because the version number isn't computed yet, but we try
to put that into HTTP header.

Fixing this by making <st:header/> tolerate null in value or name.

JVM.

that this feature is now deprecated.

Non-functional change.

Ryan reported a dead lock caused by getView(String), so removing synchronized and requiring the list be concurrently iterable.

mavenExecutionResult exceptions not empty
message : Internal error: java.lang.NullPointerException
cause : null
Stack trace :
org.apache.maven.InternalErrorException: Internal error: java.lang.NullPointerException
	at org.apache.maven.lifecycle.internal.BuilderCommon.handleBuildError(BuilderCommon.java:128)
	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:95)
	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
	at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
	at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:319)
	at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
	at org.jvnet.hudson.maven3.launcher.Maven3Launcher.main(Maven3Launcher.java:79)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.codehaus.plexus.classworlds.launcher.Launcher.launchStandard(Launcher.java:329)
	at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:239)
	at org.jvnet.hudson.maven3.agent.Maven3Main.launch(Maven3Main.java:158)
	at hudson.maven.Maven3Builder.call(Maven3Builder.java:121)
	at hudson.maven.Maven3Builder.call(Maven3Builder.java:73)
	at hudson.remoting.UserRequest.perform(UserRequest.java:118)
	at hudson.remoting.UserRequest.perform(UserRequest.java:48)
	at hudson.remoting.Request$2.run(Request.java:287)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.NullPointerException
	at hudson.maven.MojoInfo.intercept(MojoInfo.java:208)
	at hudson.maven.reporters.MavenArtifactArchiver.preExecute(MavenArtifactArchiver.java:74)
	at hudson.maven.Maven3Builder$MavenExecutionListener.recordMojoStarted(Maven3Builder.java:535)
	at hudson.maven.Maven3Builder$MavenExecutionListener.forkStarted(Maven3Builder.java:671)
	at org.apache.maven.lifecycle.internal.DefaultExecutionEventCatapult.fire(DefaultExecutionEventCatapult.java:94)
	at org.apache.maven.lifecycle.internal.DefaultExecutionEventCatapult.fire(DefaultExecutionEventCatapult.java:42)
	at org.apache.maven.lifecycle.internal.MojoExecutor.executeForkedExecutions(MojoExecutor.java:328)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:199)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
	... 24 more
channel stopped
FATAL: null
java.lang.NullPointerException
	at hudson.maven.MavenModuleSetBuild$RunnerImpl.doRun(MavenModuleSetBuild.java:833)
	at hudson.model.AbstractBuild$AbstractRunner.run(AbstractBuild.java:448)
	at hudson.model.Run.run(Run.java:1376)
	at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:479)
	at hudson.model.ResourceController.execute(ResourceController.java:88)
	at hudson.model.Executor.run(Executor.java:230)