Prevent config expansion when multi tasks need to run all targets in turn.

Author: cowboy

lib/grunt/task.js

@@ -281,7 +281,7 @@ task.renameTask = function(oldname, newname) {
 // If a property wasn't passed, run all task targets in turn.
 task.runAllTargets = function(taskname, args) {
   // Get an array of sub-property keys under the given config object.
-  var targets = Object.keys(grunt.config(taskname) || {});
+  var targets = Object.keys(grunt.config.getRaw(taskname) || {});
   // Fail if there are no actual properties to iterate over.
   if (targets.length === 0) {
     grunt.log.error('No "' + taskname + '" targets found.');