Bug 95311 [javadoc wizard] Allow setting of -source 1.5 through UI
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javadocexport/JavadocSpecificsWizardPage.java
* @see IDialogPage#createControl(Composite)
	 */
	public void createControl(Composite parent) {
		initializeDialogUnits(parent);
		fLowerComposite= new Composite(parent, SWT.NONE);
		fLowerComposite.setLayoutData(createGridData(GridData.FILL_BOTH, 1, 0));
		GridLayout layout= createGridLayout(3);
		layout.marginHeight= 0;
		fLowerComposite.setLayout(layout);
		createExtraOptionsGroup(fLowerComposite);
		createAntGroup(fLowerComposite);
		setControl(fLowerComposite);
		Dialog.applyDialogFont(fLowerComposite);
		PlatformUI.getWorkbench().getHelpSystem().setHelp(fLowerComposite, IJavaHelpContextIds.JAVADOC_SPECIFICS_PAGE);
	} 
	private void createExtraOptionsGroup(Composite composite) {
		Composite c= new Composite(composite, SWT.NONE);
		c.setLayout(createGridLayout(3));
		c.setLayoutData(createGridData(GridData.FILL_HORIZONTAL, 3, 0));
		((GridLayout) c.getLayout()).marginWidth= 0;
		fOverViewButton= createButton(c, SWT.CHECK, JavadocExportMessages.JavadocSpecificsWizardPage_overviewbutton_label, createGridData(1)); 
		fOverViewText= createText(c, SWT.SINGLE | SWT.BORDER, null, createGridData(GridData.FILL_HORIZONTAL, 1, 0));
		
		 ((GridData) fOverViewText.getLayoutData()).widthHint= 200;
		fOverViewBrowseButton= createButton(c, SWT.PUSH, JavadocExportMessages.JavadocSpecificsWizardPage_overviewbrowse_label, createGridData(GridData.HORIZONTAL_ALIGN_END, 1, 0)); 
		SWTUtil.setButtonDimensionHint(fOverViewBrowseButton);
		String str= fStore.getOverview();
		if (str.length() == 0) {
			
			fOverViewText.setEnabled(false);