Bug 94367 cannot clear compiler compliance setting at the project level
i200505092010 Cannot disable the Java compiler project-specific preferences for some projects. Steps to reproduce: 1 - check out from CVS a Java project that has project-specific Java compiler settings enabled (example: org.eclipse.core.runtime). 2 - open the properties dialog for the project, select the Java compiler node, disable project-specific Java compiler preferences. 3 - Commit the changes by pressing "Ok" and reopen the properties dialog. It looks like the settings were not saved (project-specific settings are still enabled).
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/OptionsConfigurationBlock.java
return comboBox;
	}
	
	protected Combo addInversedComboBox(Composite parent, String label, Key key, String[] values, String[] valueLabels, int indent) {
		GridData gd= new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
		gd.horizontalIndent= indent;
		gd.horizontalSpan= 3;
		
		Composite composite= new Composite(parent, SWT.NONE);
		GridLayout layout= new GridLayout();
		layout.marginHeight= 0;
		layout.marginWidth= 0;
		layout.numColumns= 2;
		composite.setLayout(layout);
		composite.setLayoutData(gd);
		
		Combo comboBox= newComboControl(composite, key, values, valueLabels);
		comboBox.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
		
		Label labelControl= new Label(composite, SWT.LEFT | SWT.WRAP);
		labelControl.setText(label);
		labelControl.setLayoutData(new GridData());
		
		fLabels.put(comboBox, labelControl);
		return comboBox;
	}
	
	protected Combo newComboControl(Composite composite, Key key, String[] values, String[] valueLabels) {
		ControlData data= new ControlData(key, values);