Allow newlines in computed binding argument list

This allows breaking in the middle of computed bindings, e.g.:

```
<div hidden$="[[_someVeryLongFunctionName(
                  someVeryLongArg,
                  anotherCrazyLongArg]]">
```

Note that `[\s\S]*` [doesn't seem to have worse performance]( http://jsperf.com/javascript-multiline-regexp-workarounds/5) than `.*`.

src/standard/effectBuilder.html

@@ -169,7 +169,7 @@
     // method expressions are of the form: `name([arg1, arg2, .... argn])`
     _parseMethod: function(expression) {
       // tries to match valid javascript property names
-      var m = expression.match(/([^\s]+)\((.*)\)/);
+      var m = expression.match(/([^\s]+)\(([\s\S]*)\)/);
       if (m) {
         var sig = { method: m[1], static: true };
         if (m[2].trim()) {