Bug 7251 compiler preference page: combo boxes should have equal sizes
combo boxes have different sizes - depending on whether the entry is 'error' or 'warning' - they should be equal-sized
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/CompilerPreferencePage.java
* @see IWorkbenchPreferencePage#init()
	 */	
	public void init(IWorkbench workbench) {
	}
	/**
	 * @see PreferencePage#createControl(Composite)
	 */
	public void createControl(Composite parent) {
		
		super.createControl(parent);
		WorkbenchHelp.setHelp(getControl(), new DialogPageContextComputer(this, IJavaHelpContextIds.COMPILER_PREFERENCE_PAGE));
	}	
	/**
	 * @see PreferencePage#createContents(Composite)
	 */
	protected Control createContents(Composite parent) {
		TabFolder folder= new TabFolder(parent, SWT.NONE);
		folder.setLayout(new TabFolderLayout());	
		folder.setLayoutData(new GridData(GridData.FILL_BOTH));
		
		String[] errorWarningIgnore= new String[] { ERROR, WARNING, IGNORE };
		
		String[] errorWarningIgnoreLabels= new String[] {
			JavaUIMessages.getString("CompilerPreferencePage.error"), 
			JavaUIMessages.getString("CompilerPreferencePage.warning"),
			JavaUIMessages.getString("CompilerPreferencePage.ignore")
		};
			
		GridLayout layout= new GridLayout();
		layout.numColumns= 2;