Patch for /lib/gdata.rb

```
jcode has been remove from ruby 1.9.2
```

Original issue reported on code.google.com by `liangwen...@gmail.com` on 27 Jul 2011 at 2:56

Attachments:
- [gdata.rb.patch](https://storage.googleapis.com/google-code-attachments/gdata-ruby-util/issue-17/comment-0/gdata.rb.patch)
