Test result page keeps identifying tests as age 1

If a test has not been viewed, the age will keep being 1.
This is because getFailedSince()/failedSince is lazy loaded.
Without having viewed the CaseResult that method is never
called and the prev.failedSince returns '0' which may or may
not be accurate.
http://jenkins.361315.n4.nabble.com/Problem-with-Age-column-on-Test-Results-tab-td3172208.html
[JENKINS-20739] Filter descriptors before adding them to hetero-list.

This allows implementations of DescriptorVisibilityFilter to hide items
with descriptors from users to prevent them from being added via the UI.

This is already implemented in /lib/hudson/newFromList/form.jelly, but
nowhere else.
Added logging when filtering descriptors.
Abstract username case sensitivity into an extension point
[JENKINS-22247] Provide an extension point to define user id case sensitivity contract

* Fix up bad merge
Use a dedicated descriptor
Updating the pull request in light of comments

- Removed the Legacy strategy completely
- Moved the strategy to an aspect of the security realm
- Separated the strategy for Users from Groups because... well it might be necessary for some
- Moved IdStrategy from inner class of User into top level class
Remove repo file from RPM. https://issues.jenkins-ci.org/browse/JENKINS-22690
[FIXED JENKINS-22699] Add option to archive only if successful
Updated w.r.t. pull request review comments
Fix test
Fixing JENKINS-22750, regression introduced in JENKINS-21394
Fixed test and refined behaviour
Annotate hudson.Util methods.

The change adds annotations for all methods inside the class. The initial idea - enforce checks of symlink methods to prevent NPEs on Windows platforms.

Signed-off-by: Oleg Nenashev <o.v.nenashev@gmail.com>
[FIXED JENKINS-22693] - Properly close InputStreams in FileParameterValue

Signed-off-by: Oleg Nenashev <o.v.nenashev@gmail.com>
Fixed annotations in hudson/Util.java according to the discussion with @jglick and @kutzi

Signed-off-by: Oleg Nenashev <o.v.nenashev@gmail.com>
[FIXES JENKINS-11673] - Support https in RPM service scripts

Adding support for --httpsKeyStore and --httpsKeyStorePassword agruments.
Follows guide at https://wiki.jenkins-ci.org/display/JENKINS/Starting+and+Accessing+Jenkins
[FIXED JENKINS-22934] Show poll thread count option when necessary.

* Show the option when the configured value is not the default
* Show the option even when projects are in other ItemGroups
* Only consider AbstractProjects
Fix warnings in ListView
[FIXED JENKINS-22967] Introduce directly modifiable views