Bug 93245 [Dialogs] Error messages show up in two locations in the properties dialog
Force an error message: 1) select a Java project 2) open the properties dialog 3) navigate to Java Compiler>Building 4) enable project specific settings 5) enter a letter into the maximum number of problems field ->the error message shows up at the bottom 6) resize the dialog ->the error message also shows up in the banner
bundles/org.eclipse.jface/src/org/eclipse/jface/preference/PreferencePage.java
* @param newType
		 *            One of the IMessageProvider constants. If newType is
		 *            IMessageProvider.NONE show the title.
		 * @see IMessageProvider
		 */
		public void updateText(String newMessage, int newType) {
			Image newImage = null;
			boolean showingError = false;
			switch (newType) {
			case IMessageProvider.NONE:
				hideRegion();
				return;
			case IMessageProvider.INFORMATION:
				newImage = JFaceResources.getImage(Dialog.DLG_IMG_MESSAGE_INFO);
				break;
			case IMessageProvider.WARNING:
				newImage = JFaceResources.getImage(Dialog.DLG_IMG_MESSAGE_WARNING);
				break;
			case IMessageProvider.ERROR:
				newImage = JFaceResources.getImage(Dialog.DLG_IMG_MESSAGE_ERROR);
				showingError = true;
				break;
			}
			
			if(newMessage == null){
				hideRegion();
				return;
			}
			showRegion();