Closes gh-17903

Closes gh-17899

Closes gh-17902

Closes gh-17898

Closes gh-17901

Closes gh-17897

Previously, a number of usages of @ConditionalOnMissingBean prevented
a bean that implements an auto-configured bean's "main" interface from
causing the auto-configuration of the bean to back off. This would
happen when @ConditionalOnMissingBean did not specify a type, the
@Bean method returned the bean's concrete type, and that concreate
type implements a "main" interface.

This commit updates such usages of @ConditionalOnMissingBean to
specify the "main" interface as the type of the bean that must be
missing. This will allow, for example, the auto-configured
MongoTemplate bean to back off when a MongoOperations bean is defined.

Closes gh-18168

Previously, calling getComment() on a nested jar file would result
in the outer jar file's comment being returned.

This commit updates the loader's JarFile to read the file's comment
from the central directory end record and return it from getComment().

Fixes gh-18128

Closes gh-18167

* gh-18164:
  Test the Gradle Plugin against Gradle 5.6.2

Closes gh-18164

See gh-18164

Closes gh-18165

Fixes gh-18153

See gh-18162

Fixes gh-18163

Closes gh-17900

Closes gh-18162

Closes gh-18161

Closes gh-18160

Closes gh-18159

Closes gh-18158

Closes gh-18157

Closes gh-18156

Closes gh-18155

Closes gh-18154

* gh-17332:
  Polish "Add a config property for JMS listener container's receive timeout"
  Add a config property for JMS listener container's receive timeout

Closes gh-17332

See gh-17332

See gh-17332

* gh-17863:
  Polish "Make logError() in AbstractErrorWebExceptionHandler overrideable"
  Make logError() in AbstractErrorWebExceptionHandler overrideable

Closes gh-17863

See gh-17863

See gh-17863

Closes gh-18150

* gh-17998:
  Improve handling of non-standard status codes in WebMvcTags

Closes gh-17998

See gh-17998

Closes gh-18149

* pr/18122:
  Detect JDK 13 updates

Closes gh-18122

See gh-18122

Closes gh-17904