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
String errorMessage = null;
		if(currentPage != null){
			message = currentPage.getMessage();
			errorMessage = currentPage.getErrorMessage();
		}
		int messageType = IMessageProvider.NONE;
		if (message != null && currentPage instanceof IMessageProvider)
			messageType = ((IMessageProvider) currentPage).getMessageType();
		if (errorMessage == null){
			if (showingError) {
				
				showingError = false;
			}
		}
		else {
			message = errorMessage;
			messageType = IMessageProvider.ERROR;
			if (!showingError) {
				
				showingError = true;
			}
		}  
		messageArea.updateText(message,messageType);
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.jface.preference.IPreferencePageContainer#updateTitle()
	 */
	public void updateTitle() {