* [JENKINS-37332] - Improve diagnostics of non-closed streams during reading of the manifests in PluginManager

* [JENKINS-37332] - Leakless processing of JarUrlConnection during Manifest parsing

* [JENKINS-37332] - Also implement leak-safe method for retrieving file modification date

* [JENKINS-37332] - Add spotcheck methods for manifest file access + Javadoc

* [JENKINS-37332] - Also test multi-line and empty attributes in the test

Provide a sensible default implementation of configure.

Change to new spelling rules in german

Determined by visitin http://jcip.net/ and accessing the source code.
The license is in the header.

Update remoting to 2.62.

Changed every occurence of 'muß' to 'muss' and 'daß' to 'dass'
because it's no longer correct.

Changes are listed below:

Fixed issues:
* [JENKINS-22853](https://issues.jenkins-ci.org/browse/JENKINS-22853) -
Be robust against the delayed EOF command when unexporting input and output streams.
(https://github.com/jenkinsci/remoting/pull/97)
* Fixed ~20 minor issues reported by FindBugs.
More fixes to be delivered in future versions.
(https://github.com/jenkinsci/remoting/pull/96)

Enhancements:
* [JENKINS-37218](https://issues.jenkins-ci.org/browse/JENKINS-37218) -
Performance: <code>ClassFilter</code> does not use Regular Expressions anymore to match <code>String.startsWith</code> patterns.
(https://github.com/jenkinsci/remoting/pull/92)
* [JENKINS-37031](https://issues.jenkins-ci.org/browse/JENKINS-37031)
<code>TcpSlaveAgentListener</code> now publishes a list of supported agent protocols to speed up connection setup.
(https://github.com/jenkinsci/remoting/pull/93)

Many more *.properties files
Started HTML files
Signed-off-by: NAlexander Shopov <ash@kambanaria.org>

typo

[JENKINS-37315] Stop A/B testing JNLP3

[FIXED JENKINS-37189] Only append `?uctest` to http/https update center URLs

- A pure unit tests will suffice

[JENKINS-37098] don’t rely on ReopenableFileOutputStream

* Added translation

* Corrected translation

- Also fixes to append `&uctest` if the update center URL already contains a query fragment

ReopenableFileOutputStream introduces file-leaks (detected on windows) when channel onClose writes on already closed log, and breaks when computer tries to delete the slave’s log directory.

[JENKINS-36717] - FindBugs cleanup

'{0}' is the literal string {0} in a message format - if you want to quote
the parameter then you need to use double single quotes ''{0}''

Fixed issues:
* [JENKINS-37140](https://issues.jenkins-ci.org/browse/JENKINS-37140) -
JNLP Slave connection issue with *JNLP3-connect* protocol when the generated encrypted cookie contains a newline symbols.
(https://github.com/jenkinsci/remoting/pull/95)
* [JENKINS-36991](https://issues.jenkins-ci.org/browse/JENKINS-36991) -
Unable to load class when remote classloader gets interrupted.
(https://github.com/jenkinsci/remoting/pull/94)

Enhancements:
* Improve diagnostics for Jar Cache write errors.
(https://github.com/jenkinsci/remoting/pull/91)

[FIXED JENKINS-37223]