INT-3213 Fix Package Tangle

JIRA: https://jira.springsource.org/browse/INT-3213

Backwards reference from ....support.channel to
....channel.registry (BeanFactoryChannelResolver).

- Move the registry interface to ....support.channel
- Move the implementation to ....channel

spring-integration-core/src/main/java/org/springframework/integration/channel/DefaultHeaderChannelRegistry.java

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.springframework.integration.channel.registry;
+package org.springframework.integration.channel;
 
 import java.util.Date;
 import java.util.Iterator;
@@ -28,6 +28,7 @@ import org.springframework.context.SmartLifecycle;
 import org.springframework.integration.MessageChannel;
 import org.springframework.integration.context.IntegrationObjectSupport;
 import org.springframework.integration.support.channel.BeanFactoryChannelResolver;
+import org.springframework.integration.support.channel.HeaderChannelRegistry;
 import org.springframework.scheduling.TaskScheduler;
 import org.springframework.util.Assert;
 

spring-integration-core/src/main/java/org/springframework/integration/config/xml/AbstractIntegrationNamespaceHandler.java

@@ -43,7 +43,7 @@ import org.springframework.beans.factory.xml.ParserContext;
 import org.springframework.core.io.Resource;
 import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
 import org.springframework.core.io.support.ResourcePatternResolver;
-import org.springframework.integration.channel.registry.DefaultHeaderChannelRegistry;
+import org.springframework.integration.channel.DefaultHeaderChannelRegistry;
 import org.springframework.integration.config.IntegrationEvaluationContextFactoryBean;
 import org.springframework.integration.config.xml.ChannelInitializer.AutoCreateCandidatesCollector;
 import org.springframework.integration.context.IntegrationContextUtils;

spring-integration-core/src/main/java/org/springframework/integration/support/channel/BeanFactoryChannelResolver.java

@@ -23,7 +23,6 @@ import org.springframework.beans.BeansException;
 import org.springframework.beans.factory.BeanFactory;
 import org.springframework.beans.factory.BeanFactoryAware;
 import org.springframework.integration.MessageChannel;
-import org.springframework.integration.channel.registry.HeaderChannelRegistry;
 import org.springframework.integration.context.IntegrationContextUtils;
 import org.springframework.util.Assert;
 

spring-integration-core/src/main/java/org/springframework/integration/support/channel/HeaderChannelRegistry.java

@@ -13,10 +13,9 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.springframework.integration.channel.registry;
+package org.springframework.integration.support.channel;
 
 import org.springframework.integration.MessageChannel;
-import org.springframework.integration.support.channel.BeanFactoryChannelResolver;
 import org.springframework.jmx.export.annotation.ManagedAttribute;
 import org.springframework.jmx.export.annotation.ManagedOperation;
 

spring-integration-core/src/test/java/org/springframework/integration/channel/registry/HeaderChannelRegistryTests.java

@@ -30,6 +30,7 @@ import org.junit.runner.RunWith;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.integration.Message;
 import org.springframework.integration.MessageChannel;
+import org.springframework.integration.channel.DefaultHeaderChannelRegistry;
 import org.springframework.integration.channel.DirectChannel;
 import org.springframework.integration.channel.MessagePublishingErrorHandler;
 import org.springframework.integration.channel.QueueChannel;

spring-integration-core/src/test/java/org/springframework/integration/config/xml/ControlBusTests.java

@@ -30,8 +30,8 @@ import org.springframework.context.ApplicationContext;
 import org.springframework.context.support.ClassPathXmlApplicationContext;
 import org.springframework.integration.Message;
 import org.springframework.integration.MessageChannel;
+import org.springframework.integration.channel.DefaultHeaderChannelRegistry;
 import org.springframework.integration.channel.DirectChannel;
-import org.springframework.integration.channel.registry.DefaultHeaderChannelRegistry;
 import org.springframework.integration.core.MessagingTemplate;
 import org.springframework.integration.core.PollableChannel;
 import org.springframework.integration.message.GenericMessage;