re #11442 new Alf definition

Code/Mantid/instrument/ALF_Definition.xml

@@ -5,8 +5,8 @@
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://www.mantidproject.org/IDF/1.0 http://schema.mantidproject.org/IDF/1.0/IDFSchema.xsd"
  name="ALF" valid-from   ="1900-01-31 23:59:59"
-                        valid-to     ="2100-01-31 23:59:59"
-		        last-modified="2009-01-15 00:00:00">
+                        valid-to     ="2015-03-16 23:59:59"
+		        last-modified="2015-03-27 00:00:00">
  
    <defaults>
      <length unit="meter"/>