1.1.1 broken on non-LuaJIT Lua

#7 is important, because

``` lua
tonumber(tostring(obj):match('0x(%x+)'), 16)
```

flat out errors. Unlike LuaJIT, where addresses are formatted with `0x` like this:

``` lua
> ={}
table: 0x00231ce8
```

ordinary Lua doesn't print `0x`:

```
> ={}
table: 0064DEE0
```
