Bug 94674 [Preferences] Preferences dialog separator under Title for pages does not stretch all the way across
The separator under the Header title for a preference page should stretch from the border of the sash to the far right with no margins in between.
bundles/org.eclipse.jface/src/org/eclipse/jface/preference/PreferenceDialog.java
* Create the page control for the supplied page.
	 * 
	 * @param page - the preference page to be shown
	 * @param parent - the composite to parent the page
	 * 
	 * @since 3.1
	 */
	protected void createPageControl(IPreferencePage page, Composite parent) {
		page.createControl(parent);
	}
	
	/**
	 * @see org.eclipse.jface.dialogs.IPageChangeProvider#getSelectedPage()
	 * 
	 * @since 3.1
	 */
	public Object getSelectedPage() {
			return getCurrentPage();
		}
	
	/**
	 * @see org.eclipse.jface.dialogs.IPageChangeProvider#addPageChangedListener(org.eclipse.jface.dialogs.IPageChangedListener)
	 * @since 3.1
	 */
	public void addPageChangedListener(IPageChangedListener listener) {
		pageChangedListeners.add(listener);
	}
	
	/**
	 * @see org.eclipse.jface.dialogs.IPageChangeProvider#removePageChangedListener(org.eclipse.jface.dialogs.IPageChangedListener)