Accessibility: Add live region attribute to table info, remove from table

- Based on feedback from Rich Caloggero in forum thread 13421 the ARIA
  live region DataTables was adding to the TBODY element of the table
  have been moved to the table information element, so screen readers
  don't go mad announcing the new informaiton in the table on every
  change, but rather just read the summary.

.datatables-commit-sync

@@ -1 +1 @@
-bef23129b8047b26e86b2aa75ed213132bd691c0
+490f897e3bdc5c679f8a3ecf2522886d293f5c0f

media/js/jquery.dataTables.js

@@ -2515,7 +2515,11 @@
 	{
 		var
 			tid = settings.sTableId,
-			nodes = settings.aanFeatures.i;
+			nodes = settings.aanFeatures.i,
+			n = $('<div/>', {
+				'class': settings.oClasses.sInfo,
+				'id': ! nodes ? tid+'_info' : null
+			} );
 	
 		if ( ! nodes ) {
 			// Update display on each draw
@@ -2524,14 +2528,16 @@
 				"sName": "information"
 			} );
 	
+			n
+				.attr( 'role', 'alert' )
+				.attr( 'aria-live', 'polite' )
+				.attr( 'aria-relevant', 'all' );
+	
 			// Table is described by our info div
 			$(settings.nTable).attr( 'aria-describedby', tid+'_info' );
 		}
 	
-		return $('<div/>', {
-			'class': settings.oClasses.sInfo,
-			'id': ! nodes ? tid+'_info' : null
-		} )[0];
+		return n[0];
 	}
 	
 	
@@ -5878,9 +5884,6 @@
 				this.appendChild( tbody[0] );
 			}
 			oSettings.nTBody = tbody[0];
-			oSettings.nTBody.setAttribute( "role", "alert" );
-			oSettings.nTBody.setAttribute( "aria-live", "polite" );
-			oSettings.nTBody.setAttribute( "aria-relevant", "all" );
 			
 			var tfoot = $(this).children('tfoot');
 			if ( tfoot.length === 0 && captions.length > 0 && (oSettings.oScroll.sX !== "" || oSettings.oScroll.sY !== "") )