* gh-1206:
  Restore AMQP vHost leading `/` support

Update RabbitProperties since vHosts have no restrictions requiring a
leading slash and can have any number of leading slashes.

Fixes gh-1206

Fixes gh-1210

Fixes gh-1217

Fixes gh-1208

Due to a mistake in Spring Batch 3.0.0 it has been necessary to
introduce a breaking API change (the addition of
BatchConfigurer.getJobExplorer()) in the 3.0.1 release. This commit
updates Boot to use 3.0.1 and modifies the Batch auto-configuration
and associated tests to implement the new method.

Extract some methods to aid readability.

Update TomcatEmbeddedServletContainer so that Connectors are removed
during initialization and re-added when the start() method is called.

This prevent protocol handlers from being bound then immediately
unbound. It also ensure that any additional connectors that may have
been added don't accidentally start to accept traffic (which could cause
potential deadlock issues).

Fixes gh-1212

Allow `compile files("$rootDir/vendor/foo.jar")` style declarations
with the jars repackaged from the gradle plugin.

Fixes gh-1215

User can now add credentials, vhost and protocol prefix (amqp://)
to any or all of the addresses, extending the format beyond that accepted
bu the rabbitmq client, but making it cloud friendly. Only one of
the addresses needs those properties and all are optional. Port
also defaults to 5672 in an address.

Closes #1167

This commit refines the changes made under 4be688aa. 4be688aa made the
default jar task a special case which broke repackaging of the archive
produced by the default war task.

This commit refines RepackageTask’s logic so that, when it’s enabled,
it will repackage a jar task’s archive if:

- The jar task is equal to RepackageTask.withJarTask
- The name of the jar task is equal to RepackageTask.withJarTask
- RepackageTask.withJarTask is null, the jar task is not referenced
  by another RepackageTask’s withJarTask, and the jar task has an
  empty classifier

The last of these three is the default case and ensures the, when the
Spring Boot plugin is applied, default jar and war artifacts are
repackaged. The classifier check is required to prevent default source
and javadoc artifacts from being repackaged.

Fixes #1204

Prior to this commit, when used with Gradle, spring-boot-starter-ws was
pulling in the versions of spring-jms, spring-oxm, and spring-tx that
Spring WS depends upon, rather than using the Boot’s Spring version.
It’s ok at the moment as both Boot and Spring WS depend on Spring 4.0.5
but will cause problems if we upgrade to 4.0.6 before Spring WS does.

This commit adds explicit dependencies on spring-jms and spring-oxm so
that Gradle pulls in the correct version (as long as a transitive
dependency doesn’t pull in a version that’s greater than the version
Boot’s using).

The logic that determined whether or not the repackaging action should
be applied to a particular jar task was broken and caused problems
when a custom RepackageTask was used in a project's build.

This commit updates the logic so that repackaging will be applied:

 - To the default jar task if RepackageTask.withJarTask is null
 - To a jar task if it is equal to RepackageTask.withJarTask
 - To a jar task if its name is equal to RepackageTask.withJarTask

Repackaging is not applied if:

 - RepackageTask.enabled is false

Numerous integration tests have been added to verify the repackaging
behaviour.

Fixes #1204

Remove org.eclipse.m2e.maveneclipse.site-0.0.1-SNAPSHOT-site.zip and
instead point people to the release on github which now works with
eclipse luna.

see #1191

Previously, SpringApplication would set the java.awt.headless system
property even if it had already been set. This commit updates
SpringApplication to honour any existing configuration when setting
the property.

Fixes #1189

The new ResolvedArtifact-based minus implementation was checking the
wrong Set when deciding whether or not a ResolvedArtifact should
be included in the result. This was leading to provided dependencies,
that should have only been packaging in WEB-INF/lib-provided also
being packaged in WEB-INF/lib.

The WarPackaging tests have been updated. In addition to checking that
WEB-INF/lib-provided does not contain anything that’s unexpected, they
also verify the contents of WEB-INF/lib

Fixes #1187

Closes #1183

Closes #1188

Upgraded to Dijkstra SR1 BOM as well as Spring HATEOAS 0.14.0.RELEASE
(required by Dijkstra SR1).

Closes #1197
Fixes #1190

Closes #1193

-q switches off all logging and the banner, -v switches logging to debug,
running with neither will be info.

Fixes gh-1108

E.g.

logging.level.org.springframework: DEBUG
logging.level.org.hibernate: WARN

Fixed gh-788

Fixes gh-1165, fixes gh-1164

See gh-1180

* pull1181:
  Fix typo in documentation