Bug 63883 Cannot configure option for enabling/disabling exclusion filters or custom output folders on a per project basis
Build M9 JDT/Core supports setting enablement for exclusion patterns and custom output folders on a per project basis. This isn't surfaced in the UI. There is only a global flag in workspace preferences.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/CompilerConfigurationBlock.java
private static final String WARNING= JavaCore.WARNING;
	private static final String IGNORE= JavaCore.IGNORE;
	private static final String ABORT= JavaCore.ABORT;
	private static final String CLEAN= JavaCore.CLEAN;
	private static final String ENABLED= JavaCore.ENABLED;
	private static final String DISABLED= JavaCore.DISABLED;
	
	private static final String PUBLIC= JavaCore.PUBLIC;
	private static final String PROTECTED= JavaCore.PROTECTED;
	private static final String DEFAULT= JavaCore.DEFAULT;
	private static final String PRIVATE= JavaCore.PRIVATE;
	
	private static final String DEFAULT_CONF= "default"; 
	private static final String USER_CONF= "user";	 
	private ArrayList fComplianceControls;
	private PixelConverter fPixelConverter;
	private Composite fJavadocComposite;
	
	private String[] fRememberedUserCompliance;
	private IStatus fComplianceStatus, fMaxNumberProblemsStatus, fResourceFilterStatus;
	public CompilerConfigurationBlock(IStatusChangeListener context, IJavaProject project) {
		super(context, project, getKeys());
		
		fComplianceControls= new ArrayList();
			
		fComplianceStatus= new StatusInfo();
		fMaxNumberProblemsStatus= new StatusInfo();
		fResourceFilterStatus= new StatusInfo();