frozen constant objects should live in the data segment

[toshok]

similar to #10.

pirouette does the following to map objective-c enums:

var enum = Object.create(null);
Object.defineProperty (enum, "foo", 5);
...
Object.freeze(enum);

esprima does the same with its syntax object, which is a set of constant strings.

If we can statically determine that an object is constructed and populated with constants - and then frozen, we can move the construction/population out of code entirely, and put it in the data segment of the executable instead.