Closes gh-24038

Closes gh-22974

Closes gh-21121

Closes gh-22908

Previously, when an embedded test database was being auto-configured
any schema username and password specified by the user would result
in a separate embedded test database being created to load the schema.
This then left the actual test database without the schema causing
test failures.

This commit updates the test database auto-configuration to set the
schema username to an empty string in a property source that's added
first to the environment's property sources. This causes any schema
username configured by the user to be ignored, preventing the creation
of a separate database for schema.sql processing.

Fixes gh-19321

* gh-24020:
  Fix typo in Spring Session documentation

Closes gh-24020

See gh-24020

Closes gh-23151

Previously, Quartz could be configured with a specific DataSource
using `@QuartzDataSource` but it was not possible to configure a
Quartz-specific transaction manager. This could result in the
different DataSources being used by Quartz itself and Quart'z
DataSourceTransactionManager.

This commit introduces a new qualifier, `@QuartzTransactionManager`,
that can be used to avoid the above-described problem. Any
`@QuartzTransactionManager`-annotated bean will be used by the
Quartz auto-configure configuration instead of the application's main
`TransactionManager`. If no such qualified bean is present, the
application's main TransactionManager, if any, will be used as before.

Fixes gh-20184

Fixes gh-23978

When running on Java 11 (where `@PostConstruct` is no longer part of
the JRE) and without a dependency on jakarta-annotation-api,
`@PostContruct` annotions are silently dropped. This leads to obscure and
hard-to-track down changes in the behaviour of our auto-configuration
as the `@PostConstruct`-annotated methods are not invoked.

To allow users to run on Java 11 without having jakarta-annotation-api
on the classpath, this commit removes use of `@PostConstruct` from main
code. A Checkstyle rule has also been added to prevent its usage in
main code from being reintroduced.

Closes gh-23723

Closes gh-23808

Closes gh-22925

Fixes gh-23966

Closes gh-23965

See gh-23962

See spring-io/concourse-java-scripts#11

See gh-23962

See spring-io/concourse-java-scripts#11

Ensure that metadata sourced from inner-types is not deleted when
performing an incremental compile. Prior to this commit, the source
type was searched using the `Outer$Inner` format. This is not supported
`Elements.getTypeElement` so we now convert the names to `Outer.Inner`.

Closes gh-10886

Closes gh-23953

Closes gh-23943

Closes gh-23952

Closes gh-23950

Closes gh-23947

Closes gh-23951

Closes gh-23946

Closes gh-23786

Closes gh-23956

Closes gh-23783

Closes gh-23798

Closes gh-23790

Closes gh-23776