issue #10:  tightened up reconnection policy, handle control signals
Fixed copyright
Issue #11:  Added support for dynamic update of topics in MQTTSource
Added icons
Add MQTTSample
Add license and copyright for sample
Fixed icon again
Issue #9:  Support for connection document
issue#9: support for connection document, handle default connection
documentation location
Fixed icons.
issue #9:  support for connection document
issue #9:  support for connection document
Delete MQTTSink_16.gif
Delete MQTTSink_32.gif
Delete MQTTSource_16.gif
Delete MQTTSource_32.gif
issue#19:  Added compile time and runtiime checks
Added control signal type back adn added  convenience method to
construct control signal
Updated instruction for messages.properties
Fixed error message
Merge branch 'master' of github.com:IBMStreams/streamsx.messaging

Conflicts:
	com.ibm.streamsx.messaging/.classpath