Added support for the Compress property in project properties in the Pipeline tool.
Added an optional OnError callback to CommandLineParser so errors opening a MGCB file can be listed without showing usage information.
Fixed a typo in IController: ProjectDiry -> ProjectDirty.
Added IController.View. Used by PipelineProjectParser to access IView.AppendOutput from a controller in the CommandLineParser.OnError event handler.
Added dummy CommandLineParameter properties for /rebuild and /clean so they don't cause errors loading a MGCB file that contain them.