adding bound functions, with test

test/fixtures/execution/test_functions.coffee

@@ -0,0 +1,22 @@
+x: 1
+y: {}
+y.x: => 3
+
+print(x is 1)
+print(typeof(y.x) is 'function')
+print(y.x() is 3)
+print(y.x.name is 'x')
+
+
+obj: {
+  name: "Fred"
+
+  bound: =>
+    (==> print(this.name is "Fred"))()
+
+  unbound: =>
+    (=> print(!this.name?))()
+}
+
+obj.unbound()
+obj.bound()