code: function expandForAll(array, makeMask) {
  			var files = [];
  			ensureArray(array).forEach(function(item) {
  				files = files.concat(grunt.file.expand(makeMask(item)));
  			});
  			return files;
  		}
docs: Runs grunt.file.expand for every array item and returns combined array.
  
  @param {Array|String} array Masks (can be single string mask).
  @param {Function} makeMask function(mask) { return mask; }
  @return {Array} All found files.