MQTT - Use INT/SPR 4.0.0

Conflicts:
	spring-integration-mqtt/build.gradle
MQTT - Update to Spring Integration 4.0.0.M1

Conflicts:
	spring-integration-mqtt/build.gradle
[artifactory-release] Release version mqtt 4.0.0.M1
[artifactory-release] Next development version
Updated MQTTMessageConverter to use new classpath

Conflicts:
	spring-integration-mqtt/build.gradle
MQTT Update to SI 4.0.0.M2, SPR 4.0.0.RELEASE

Conflicts:
	spring-integration-mqtt/build.gradle
[artifactory-release] Release version 4.0.0.M2
[artifactory-release] Next development version
Uses Spring 4.0 dependencies

Updated the buid version 1.1.0
[artifactory-release] Release version 1.1.0.M1
[artifactory-release] Next development version
XD-1170 updted import for MessageHandlingException
[artifactory-release] Splunk Release version 1.1.0.M2
[artifactory-release] Splunk Next development version