* pr/8128:
  Polish "Handle null value in OnExpressionCondition"
  Handle null value in OnExpressionCondition

Closes gh-8128

Closes gh-2886

* pr/8768:
  Polish "Use JDK hashCode() variants for primitives"
  Use JDK hashCode() variants for primitives

Closes gh-8768

See gh-8768

Closes gh-8892

This commit improves `SpringApplicationAdminMXBeanRegistrar` so that it
work with traditional Servlet-based app but also with Spring WebFlux.

Closes gh-8533

Closes gh-8232

Closes gh-8885

Closes gh-6911

This commit makes sure to honour the `spring.aop.proxy-target-class`
property if set by the user. Previously, the
`PersistenceExceptionTranslationPostProcessor` was always configured to
use cglib, regardless of the value of that property.

Closes gh-8887

Closes gh-8497

This commit separates the JPA-specific bits of the batch
auto-configuration so that it is possible to reuse most of the logic if
JPA isn't available at all.

Closes gh-8877

Fixes gh-8883

See gh-8884

This commit makes sure to honour the `spring.aop.proxy-target-class`
property if set by the user. Previously, the
`MethodValidationPostProcessor` was always configured to use cglib,
regardless of the value of that property.

Closes gh-8869