* Reduce memory footprint for the plugin info by presizing hashmaps to reduce waste for small maps and interning commonly duplicated plugin strings

* Replace duplicated empty string arrays with the one in MemoryReductionUtil

* Fix interning where strings are null

* Fix to deal with the fact that we directly mutate dependency fields for UpdateSite, sigh

* Reduce starting HashMap size for some hashmaps likely to be empty or tiny

* Cleanup per review comments

* Trim some extra waste out of the UpdateSite warnings

* Fix count of optional dependencies

* Move predicates for dependency matching to top-level static final field so they are not duplicated

* [JENKINS-53710] Fix signature check on Java 11

* Add explanation

* [JENKINS-31448] Protect against NPE in update center on restart

* rename updateSite private methods

* JENKINS-36547: Introduce Queue.Task.getAffinityKey()

and use it in LoadBalancer.assignGreedily() to find a node for a task.

* JENKINS-36547: Fix Javadoc error

* fixup! JENKINS-36547: Fix Javadoc error

* Fixed Javadoc for Queue.getAffinityKey()

Signed-off-by: NNicolas De Loof <nicolas.deloof@gmail.com>

* JENKINS-53353 Do not cache results of View.getActions()

Plugins that may affect the view, eg via TransientViewActionFactory
that get installed _after_ a `view` has been initally viewed
will not be able to add anything to the view if the results
of getActions() are cached.

* JENKINS-53353 Removed unnecessary synchronization

* JENKINS-53353 Whitespace

* JENKINS-53353 Restored (and deprecated) updateTransientActions

to maintain backwards compatibility.

[JENKINS-46523] - Make UnixReflection class compatible with Java 11, remove pre-Java 8 reflection (#3650)

* [JENKINS-46523] - Make UnixReflection class compatble with Java 9+, remover pre-Java-8 code

Ideally this logic should be replaced by Multi-Release JAR

* [JENKINS-46523] - FindBugs annotations complicate the code here

* [JENKINS-53799 ] - Explicitly reference the JIRA ticket in the error message

[JENKINS-53721] - Add getter/setter to EnvVars so the envinject plugin can set Platform safely (#3639)

[JENKINS-53721] - Add getter/setter to EnvVars so the envinject plugin can set Platform safely

It starts failing FindBugs runs against Java 11.
The implementation is not efficient, but it should not be a serious issue in this case

* [JENKINS-53693] - Update PowerMock and Mockito to a Java11-compatible version

* [JENKINS-53693] - Fix tests which depend on mocking

* [JENKINS-53693] - Apply fixes to PowerMock

* [JENKINS-53282] "Restarting VM as requested" should be just an INFO message

Previously logged as severe was I think incorrect, as it was simply
reacting on "standard" user interaction.
`INFO` ought to be enough because anyway, that's the default logged level,
hence will still be seen by admins if needed.

Side note: there's clearly duplications of code here.
I might address it later, but do not want to right now transform a 5 min
task into a much riskier one.

* Also lower log severity when shutting down after user request

JENKINS-53177

- that was used for compatibility with new API token released after the version that received the security fix

* add support for JSR250 @PostConstruct
Signed-off-by: NNicolas De Loof <nicolas.deloof@gmail.com>

* with PostConstruct method no need to explicitely invoke load() anymore
Signed-off-by: NNicolas De Loof <nicolas.deloof@gmail.com>

* introduce PersistentDescriptor to flag Descriptors
which expect load() to be invoked.

This prevent double execution for plugins which
have been designed on previous version of code and
don’t expect load to be automatically invoked.
Signed-off-by: NNicolas De Loof <nicolas.deloof@gmail.com>

* document PostConstruct method discovery logic
Signed-off-by: NNicolas De Loof <nicolas.deloof@gmail.com>

* Force reflective access to non-public @PostConstruct methods
Signed-off-by: NNicolas De Loof <nicolas.deloof@gmail.com>

* check @PostConstruct annotation both on method and on implemented interface with a matching method.
Signed-off-by: NNicolas De Loof <nicolas.deloof@gmail.com>

* typo
Signed-off-by: NNicolas De Loof <nicolas.deloof@gmail.com>