* [JENKINS-45244] Avoid locking every time getActions is called

* [JENKINS-45244] - Remove initializer

* Add comment clarifying that the actions must be volatile

Use official version of jbcrypt 0.4 in Hudson Private Security Realm

[FIXED JENKINS-45895] - JNLPLauncher config.jelly should not display Work Dir settings when included from other class

add missing @Symbol for agent protocols

Added Polish translations for setup wizard

* [JENKINS-43199] Reliably close build log file.

* Try harder to ensure that the logger is closed at the end of the build.

[FIXED JENKINS-45895] - JNLPLauncher config.jelly should not display Work Dir settings when included from other class

* [FIXED JENKINS-20272] Don't monitor response on offline agents

* Updating to only not check if channel is null.

* Fix broken test.

[JENKINS-45553] - Cache the Mac so we do not need to constantly recreate it

[JENKINS-45553] Avoid calling Task.getFullDisplayName unless and until we need to

[JENKINS-38185] Always follow redirects for DownloadService

* [JENKINS-44112] - Enable Work Directories by defaul in new agents with JNLP launcher

* [JENKINS-44112] - Add test for the legacy data migration

* [JENKINS-44112] - Add test for API calls

* [JENKINS-44112] - Apply new APIs within core and tests

* [JENKINS-44112] - Cleanup tests

* [JENKINS-44112] - Cleanup API of JNLPLauncher

* [JENKINS-44112] - Address the leftover code review comments

Fixed typo in German translation.

* Update ParametersAction.java

Pull request 2687 added a 'false' setting for this flag to prevent warning messages from being logged, but the logic doesn't match the message or the documentation. This updates the check, so that the warning message is correctly suppressed if `hudson.model.ParametersAction.keepUndefinedParameters` is set to false.

* Updated check to use optBoolean

[JENKINS-45737] - User mapping should be stored in a per-Jenkins field and getAll should be called just once per session unless we reload (#2928)

[JENKINS-45737] - User mapping should be stored in a per-Jenkins field and getAll should be called just once per session unless we reload

[JENKINS-25625] Deleting obsolete SECURITY-144-compat exclusion

[JENKINS-45516] Fix null pointer exception when checking for previous completed build

[FIX JENKINS-45679] JNLP needs to request Java 8

[JENKINS-14807] Fix path separator when EnvVars overrides variable like PATH+XYZ on slave node cross platform

[JENKINS-45438] Add Jetty HTTP/2 connector

Signed-off-by: Nolivier lamy <olamy@apache.org>

Signed-off-by: Nolivier lamy <olamy@apache.org>

Fix @since tags

[JENKINS-34914] - Prevent NPE in Jenkins#getRootURL() when the instance is not fully loaded

Signed-off-by: Nolivier lamy <olamy@apache.org>