Bug 21583 Generate Javadoc won't link prereqed projects
In the export wizard for generating javadoc, there is no easy way to link the javadoc from a prereqed project. The wizard has a screen for linking in javadoc from libraries included in the classpath, but projects in the classpath do not show up. I got a temporary workaround from the news group. Just add a "-link URL_TO_OTHER_PROJECT_JAVADOC" in the javadoc options page, but there should be an easier way to do this.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javadocexport/JavadocStandardWizardPage.java
*/
	public void createControl(Composite parent) {
		
		initializeDialogUnits(parent);
		lastProject= null;
		fWizard= (JavadocWizard)this.getWizard();
	
		fUpperComposite= new Composite(parent, SWT.NONE);
		fUpperComposite.setLayoutData(createGridData(GridData.FILL_VERTICAL | GridData.FILL_HORIZONTAL, 1, 0));
		
		GridLayout layout= createGridLayout(4);
		layout.marginHeight= 0;
		fUpperComposite.setLayout(layout);
		
		createBasicOptionsGroup(fUpperComposite);
		createTagOptionsGroup(fUpperComposite);
		createListDialgField(fUpperComposite);
		createStyleSheetGroup(fUpperComposite);
		
		setControl(fUpperComposite);
		WorkbenchHelp.setHelp(fUpperComposite, IJavaHelpContextIds.JAVADOC_STANDARD_PAGE);
	}
		private void createBasicOptionsGroup(Composite composite) {
		
		fTitleButton= createButton(composite, SWT.CHECK, JavadocExportMessages.getString("JavadcoStandardWizardPage.titlebutton.label"), createGridData(1));  
		fTitleText= createText(composite, SWT.SINGLE | SWT.BORDER, null, createGridData(GridData.FILL_HORIZONTAL, 3, 0));
		String text= fStore.getTitle();
		if(!text.equals("")) { 
			fTitleText.setText(text);
			fTitleButton.setSelection(true);