Performance problem when trying to run RTC CI builds

 The SCM compare function is a very expensive query.  It will check every element in the workspace against every element in the stream looking for changes, and for large workspaces/streams that comparison can take a very long time.  Rather than compare, consider using the accept command with the build sandbox workspace, if anything is accepted into the workspace then run the build.  The accept is a much cheaper command and will accomplish the same task of running the build only when changes occur to the build workspace.