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
addCheckBox(group, label, PREF_CODEGEN_INLINE_JSR_BYTECODE, enableDisableValues, 0);	
		
		return compComposite;
	}
	
	
	private Composite create15TabContent(TabFolder folder) {
		String[] errorWarningIgnore= new String[] { ERROR, WARNING, IGNORE };
		
		String[] errorWarningIgnoreLabels= new String[] {
			PreferencesMessages.getString("CompilerConfigurationBlock.error"),  
			PreferencesMessages.getString("CompilerConfigurationBlock.warning"), 
			PreferencesMessages.getString("CompilerConfigurationBlock.ignore") 
		};
			
		int nColumns= 3;
		
		GridLayout layout= new GridLayout();
		layout.numColumns= nColumns;
					
		Composite composite= new Composite(folder, SWT.NULL);
		composite.setLayout(layout);
		Label description= new Label(composite, SWT.WRAP);
		description.setText(PreferencesMessages.getString("CompilerConfigurationBlock.15.description")); 
		GridData gd= new GridData();
		gd.horizontalSpan= nColumns;
		description.setLayoutData(gd);
		
		String label= PreferencesMessages.getString("CompilerConfigurationBlock.pb_unsafe_type_op.label"); 
		addComboBox(composite, label, PREF_15_PB_UNSAVE_TYPE_OPERATION, errorWarningIgnore, errorWarningIgnoreLabels, 0);