title: Get the changelist number of current workspace directory
body: <p>Each time we do a build, we have to record the changelist number of source files for tracking. We have different projects (under different directories) and they are synced at different changelist number. May you please show me how can we get the changelist number of a specific directory?</p>
  
  <p>Any suggestions are appreciated. Thanks and Best Regards</p>