Bug 214137 [Markers] Unbound system filters should be bound to problems view.
In 3.3 we supported systemFilters which are not currently picked up by the problems view. We should pick these up for compatiblity.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/CachedMarkerBuilder.java
/*
			 * (non-Javadoc)
			 * 
			 * @see org.eclipse.core.runtime.jobs.Job#run(org.eclipse.core.runtime.IProgressMonitor)
			 */
			protected IStatus run(IProgressMonitor monitor) {
				updateJob.cancel();
				buildAllMarkers(monitor);
				updateJob.schedule();
				return Status.OK_STATUS;
			}
			/*
			 * (non-Javadoc)
			 * 
			 * @see org.eclipse.ui.progress.WorkbenchJob#shouldRun()
			 */
			public boolean shouldRun() {
				
				if (preBuildTime > 0
						&& System.currentTimeMillis() - preBuildTime < TIME_OUT)
					return false;
				
				preBuildTime = -1;
				
				return PlatformUI.isWorkbenchRunning();
			}
		};
		markerProcessJob.setSystem(true);
	}
	/**