Bug 167170 [Markers] Need to check for duplicate filter names
M3 It is currently possible to enter duplicate filter names
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/DialogMarkerFilter.java
*         <code>false</code>.
	 */
	boolean isDirty() {
		return dirty;
	}
	/**
	 * Marks the dialog as dirty.
	 */
	void markDirty() {
		dirty = true;
	}
	/**
	 * Set the marker filter.
	 * 
	 * @param newFilter
	 */
	public void setFilter(MarkerFilter newFilter) {
		setFilters(new MarkerFilter[] { newFilter });
		updateUIFromFilter();
	}
	/**
	 * @return the MarkerFilters associated with the dialog.
	 */
	public MarkerFilter[] getFilters() {
		return filters;
	}
	/**
	 * A selection has occured on one of the checkboxes or combos. Update.
	 * 
	 */