Fix bug when supplying multiple file specs

If you specify multiple file specs and the first one sets move to false, it affects all subsequent ones even if you want them to have move = true.

Author: facboy

tasks/filerev.js

@@ -13,10 +13,11 @@ module.exports = function (grunt) {
       length: 8
     });
     var target = this.target;
-    var move = true;
     var filerev = grunt.filerev || {summary: {}};
 
     eachAsync(this.files, function (el, i, next) {
+      var move = true;
+      
       // If dest is furnished it should indicate a directory
       if (el.dest) {
         // When globbing is used, el.dest contains basename, we remove it