To null or not to null

Fixed an issue with null datatables. Apparently, nulls don't like to be locked. Go figure :)

Hello World

Rejoice everyone! This is the first public release of WorkloadTools, complete with samples.
It includes 3 Listeners:

• ProfilerWorkloadListener
• SqlTraceWorkloadListener
• ExtendedEventsWorkloadListener

It also includes 3 Consumers:

• AnalysisConsumer
• ReplayConsumer
• WorkloadFileWriterConsumer

See the Samples directory and the README file for more information