A first skeleton for introducing Harmony proxies

src/runtime.js

Index: src/runtime.js
diff --git a/src/runtime.js b/src/runtime.js
index 4f53efe0b064c1c6e508ae6c455566276f8fd794..77b97aed837d654f8f8a3fda74cce5393674c25b 100644
--- a/src/runtime.js
+++ b/src/runtime.js
@@ -644,6 +644,6 @@ function DefaultString(x) {
 // NOTE: Setting the prototype for Array must take place as early as
 // possible due to code generation for array literals.  When
 // generating code for a array literal a boilerplate array is created
-// that is cloned when running the code.  It is essiential that the
+// that is cloned when running the code.  It is essential that the
 // boilerplate gets the right prototype.
 %FunctionSetPrototype($Array, new $Array(0));