Previously, for a non-async response with a successful status (< 400),
ErrorPageFilter would always call flushBuffer. This triggers an
exception in Tomcat if the client has closed the connection before the
response has been fully sent. In this case, Tomcat treats the response
as successful and commits it before control returns to the filter.

This commit updates ErrorPageFilter to only perform the flush if the
response has not already been committed, leaving any further flushing
that may be necessary to be handled by the servlet container.

Fixes gh-1938

Update ConfigurationPropertiesReportEndpoint to find
@ConfigurationProperties using `context.findAnnotationOnBean` rather
than `AnnotationUtils.findAnnotation`. This will correctly find the
annotation even if the bean is an interface based proxy.

Fixes gh-1927

Switch from external docbook XSLT to those shipped as part of the
Maven plugin.

Fixes gh-1942

Previously, configuration of a ServletContext init parameter required
the use of a ServletContextInitializer bean. This commmit adds
support for declarative configuration via the environment using
server.context_parameters.<name>=<value>.

Closes gh-1791

Add a 'module' layout for the repackager which includes all 'compile'
and 'runtime' scope dependencies and does not require a main class.

Fixes gh-1941

ServerConnector is in different packages in Jetty 8 and Jetty 9 which
was leading to a NoClassDefFounderError when SSL was used with
Jetty 8.

This commit updates SslServerConnectorFactory to return an
AbstractConnector, a super class of ServerConnector, that is in the
same package in both Jetty 8 and Jetty 9. This class does not provide
a setPort method so the setting of the port has been pushed down into
the SslServerConnectorFactory implementation.

SSL samples for both Jetty 8 and Jetty 9 have been added to verify
SSL with both supported versions of Jetty.

Closes gh-1925

Closes gh-1897

Fixes gh-1829

Closes gh-1799

Closes gh-1904

Relax the servlet version check in Maven integration tests.

See gh-1797

Conflicts:
	pom.xml
	spring-boot-actuator/pom.xml
	spring-boot-autoconfigure/pom.xml
	spring-boot-cli/pom.xml
	spring-boot-dependencies/pom.xml
	spring-boot-docs/pom.xml
	spring-boot-full-build/pom.xml
	spring-boot-integration-tests/pom.xml
	spring-boot-parent/pom.xml
	spring-boot-samples/pom.xml
	spring-boot-samples/spring-boot-sample-actuator-log4j/pom.xml
	spring-boot-samples/spring-boot-sample-actuator-noweb/pom.xml
	spring-boot-samples/spring-boot-sample-actuator-ui/pom.xml
	spring-boot-samples/spring-boot-sample-actuator/build.gradle
	spring-boot-samples/spring-boot-sample-actuator/build.xml
	spring-boot-samples/spring-boot-sample-actuator/pom.xml
	spring-boot-samples/spring-boot-sample-amqp/pom.xml
	spring-boot-samples/spring-boot-sample-aop/pom.xml
	spring-boot-samples/spring-boot-sample-batch/pom.xml
	spring-boot-samples/spring-boot-sample-data-elasticsearch/pom.xml
	spring-boot-samples/spring-boot-sample-data-gemfire/pom.xml
	spring-boot-samples/spring-boot-sample-data-jpa/pom.xml
	spring-boot-samples/spring-boot-sample-data-mongodb/pom.xml
	spring-boot-samples/spring-boot-sample-data-redis/pom.xml
	spring-boot-samples/spring-boot-sample-data-rest/pom.xml
	spring-boot-samples/spring-boot-sample-data-solr/pom.xml
	spring-boot-samples/spring-boot-sample-flyway/pom.xml
	spring-boot-samples/spring-boot-sample-hornetq/pom.xml
	spring-boot-samples/spring-boot-sample-integration/pom.xml
	spring-boot-samples/spring-boot-sample-jetty/pom.xml
	spring-boot-samples/spring-boot-sample-liquibase/pom.xml
	spring-boot-samples/spring-boot-sample-parent-context/pom.xml
	spring-boot-samples/spring-boot-sample-profile/build.gradle
	spring-boot-samples/spring-boot-sample-profile/pom.xml
	spring-boot-samples/spring-boot-sample-secure/pom.xml
	spring-boot-samples/spring-boot-sample-servlet/pom.xml
	spring-boot-samples/spring-boot-sample-simple/build.gradle
	spring-boot-samples/spring-boot-sample-simple/pom.xml
	spring-boot-samples/spring-boot-sample-tomcat-jsp/pom.xml
	spring-boot-samples/spring-boot-sample-tomcat-multi-connectors/pom.xml
	spring-boot-samples/spring-boot-sample-tomcat-ssl/pom.xml
	spring-boot-samples/spring-boot-sample-tomcat/pom.xml
	spring-boot-samples/spring-boot-sample-traditional/pom.xml
	spring-boot-samples/spring-boot-sample-velocity/pom.xml
	spring-boot-samples/spring-boot-sample-web-freemarker/pom.xml
	spring-boot-samples/spring-boot-sample-web-groovy-templates/pom.xml
	spring-boot-samples/spring-boot-sample-web-jsp/pom.xml
	spring-boot-samples/spring-boot-sample-web-method-security/pom.xml
	spring-boot-samples/spring-boot-sample-web-secure-custom/pom.xml
	spring-boot-samples/spring-boot-sample-web-secure-jdbc/pom.xml
	spring-boot-samples/spring-boot-sample-web-secure/pom.xml
	spring-boot-samples/spring-boot-sample-web-static/build.gradle
	spring-boot-samples/spring-boot-sample-web-static/pom.xml
	spring-boot-samples/spring-boot-sample-web-ui/build.gradle
	spring-boot-samples/spring-boot-sample-web-ui/pom.xml
	spring-boot-samples/spring-boot-sample-web-velocity/pom.xml
	spring-boot-samples/spring-boot-sample-websocket/pom.xml
	spring-boot-samples/spring-boot-sample-ws/pom.xml
	spring-boot-samples/spring-boot-sample-xml/pom.xml
	spring-boot-starters/pom.xml
	spring-boot-starters/spring-boot-starter-actuator/pom.xml
	spring-boot-starters/spring-boot-starter-amqp/pom.xml
	spring-boot-starters/spring-boot-starter-aop/pom.xml
	spring-boot-starters/spring-boot-starter-batch/pom.xml
	spring-boot-starters/spring-boot-starter-data-elasticsearch/pom.xml
	spring-boot-starters/spring-boot-starter-data-gemfire/pom.xml
	spring-boot-starters/spring-boot-starter-data-jpa/pom.xml
	spring-boot-starters/spring-boot-starter-data-mongodb/pom.xml
	spring-boot-starters/spring-boot-starter-data-rest/pom.xml
	spring-boot-starters/spring-boot-starter-data-solr/pom.xml
	spring-boot-starters/spring-boot-starter-freemarker/pom.xml
	spring-boot-starters/spring-boot-starter-groovy-templates/pom.xml
	spring-boot-starters/spring-boot-starter-hornetq/pom.xml
	spring-boot-starters/spring-boot-starter-integration/pom.xml
	spring-boot-starters/spring-boot-starter-jdbc/pom.xml
	spring-boot-starters/spring-boot-starter-jetty/pom.xml
	spring-boot-starters/spring-boot-starter-log4j/pom.xml
	spring-boot-starters/spring-boot-starter-logging/pom.xml
	spring-boot-starters/spring-boot-starter-mobile/pom.xml
	spring-boot-starters/spring-boot-starter-parent/pom.xml
	spring-boot-starters/spring-boot-starter-redis/pom.xml
	spring-boot-starters/spring-boot-starter-remote-shell/pom.xml
	spring-boot-starters/spring-boot-starter-security/pom.xml
	spring-boot-starters/spring-boot-starter-social-facebook/pom.xml
	spring-boot-starters/spring-boot-starter-social-linkedin/pom.xml
	spring-boot-starters/spring-boot-starter-social-twitter/pom.xml
	spring-boot-starters/spring-boot-starter-test/pom.xml
	spring-boot-starters/spring-boot-starter-thymeleaf/pom.xml
	spring-boot-starters/spring-boot-starter-tomcat/pom.xml
	spring-boot-starters/spring-boot-starter-velocity/pom.xml
	spring-boot-starters/spring-boot-starter-web/pom.xml
	spring-boot-starters/spring-boot-starter-websocket/pom.xml
	spring-boot-starters/spring-boot-starter-ws/pom.xml
	spring-boot-starters/spring-boot-starter/pom.xml
	spring-boot-tools/pom.xml
	spring-boot-tools/spring-boot-dependency-tools/pom.xml
	spring-boot-tools/spring-boot-gradle-plugin/pom.xml
	spring-boot-tools/spring-boot-loader-tools/pom.xml
	spring-boot-tools/spring-boot-loader/pom.xml
	spring-boot-tools/spring-boot-maven-plugin/pom.xml
	spring-boot-versions/pom.xml
	spring-boot/pom.xml

Fixes gh-1797

Add an additional "IntegrationTest" property to @IntegrationTests
to ensure that they get a different MergedContextConfiguration which
is used as a context cache key.

Fixes gh-1909

Replace the getMaxActive() call with getMaxActiveSessions().

Fixes gh-1902

Fixes gh-1918

This reverts a change that I assume was orphaned from work in
progress to address #1353, but is no longer needed. Anyway
there is no reason to restrict MvcEndpoints to be unique by
path since they can declare their own @RequestMappings
(and if there are duplicates they will be detected when those
are scanned).

Fixes gh-1911

Relocate AnsiOutputApplicationListener to `context.embedded.config`
to fix package tangle.

See gh-1243

Add additional @AutoConfigureAfter elements to ActiveMQAutoConfiguration
and HornetQAutoConfiguration to ensure that they are configured after
JndiConnectionFactoryAutoConfiguration.

The possible sources for a JMS ConnectionFactory are:

1. JNDI
2. HornetQ (embedded broker or an external broker)
3. ActiveMQ (embedded broker or an external broker)

The last two auto configurations must run after JTA auto-configuration
has completed as it may register additional beans that are necessary to
enable XA.

Previously, the HornetQ embedded broker would start regardless of the
presence of a ConnectionFactory as a ConditionalOnMissingBean was
missing. Furthermore, there was no order condition for the JNDI
auto-configuration so it may just run after one of the broker has been
found.

JNDI takes now precedence to be consistent with the regular DataSource
auto configuration.

Fixes gh-1821

Fixes gh-1848

* metrics/activeSessions:
  Add Tomcat public metrics for session usage

Fixes gh-1860

Fixes gh-1900

Fixes gh-1898

This reverts commit 325d7512.

Conflicts:
	spring-boot-dependencies/pom.xml

Fixes gh-1872

Fixes gh-1899

Conflicts:
	spring-boot-dependencies/pom.xml