Added option 'getData'

doc/jquery.autocomplete.txt

@@ -184,6 +184,9 @@ useDelimiter  (default value: false)
     comma.  For example, you may want to allow the user to enter a comma separated list of values--and 
     each value will autocomplete without erasing the other delimited values in the input field. 
 
+getData  (default value: null)
+    Function which return data to be processed. If several sources are present, then data is fetched
+    in following order: "data" option, "getData" option call, ajax query to remote url.
 
 More advanced options :
 =======================

src/jquery.autocomplete.js

@@ -80,7 +80,8 @@
         useDelimiter: false,
         delimiterChar: ',',
         delimiterKeyCode: 188,
-        processData: null
+        processData: null,
+        getData: null
     };
 
     /**
@@ -536,6 +537,8 @@
             processResults([], value);
         } else if (this.options.data) {
             processResults(this.options.data, value);
+        } else if (this.options.getData) {
+            processResults(this.options.getData(), value);
         } else {
             this.fetchRemoteData(value, function(remoteData) {
                 processResults(remoteData, value);