Add gradle example builds to spring-boot-sample-tomcat and
spring-boot-sample-traditional.

Issue: #53129653

Develop gradle plugin that can repackage JAR/WAR archives so that
they can be launched using 'java -jar'

Issue: #53129653

Issue: #53129653

Issue: #53129653

Fix compression of existing jars to detect nested zip entries and
use the STORED method.

Also fixed various test errors.

Issue: #53129653

Issue: #54228642

Revert welcome file default that break existing tests.

Issue: #54228642

Issue: Issue: #53129653

* For a jar deployment add classpath:static/index.html
(works via Spring MVC mapping)
* For a war the same thing works, but so does adding
index.html to src/main/webapp (works via container
default servlet)

[Fixes #54092261] [bs-252]

Create spring-loader-tools containing utilities that can be used
with both Maven and Gradle plugings.

Refactored existing Maven plugin to use the new project.

Issue: #53129653

Issue: #54095231

Issue: #54095231

Issue: #54095231

* actuator -> boot-ops
* cli -> boot-cli
* launcher -> boot-load
* autoconfig -> boot-config
* bootstrap -> boot-strap
* starters -> boot-up

[#54095231] [bs-253] Refactor Zero->Boot

[Fixes #53027833]

* Leverages existing behaviour of BeanWrapperImpl where possible
to autogrow collections and lists
* Logic for scanning and converting bean paths encapsulated in
BeanPath inner class

[Fixes #53947797] [bs-249]
@ConfigurationProperties cannot bind to Map<String,List<Thing>>

Use a ImportBeanDefinitionRegistrar to register BeanPostProcessors
rather than using @Bean definitions. Prevents warnings about
beans not having all BeanPostProcessors applied.

Rework TomcatEmbeddedWebappClassLoader to deal with the fact that
the 'system' field is final in Tomcat 8.

Issue: #53945989

* Make Rector @Autowirable
* Create a ConsumerBeanPostProcessor so users can add
@On and @Reply to bean methods
* Added groovy auto compiler and script sample

[#53955419] [bs-250]

[#53947797] [bs-249] @ConfigurationProperties cannot bind to
Map<String,List<Thing>> or Map<String,Thing>