Enhancements - streaming API, JSON and SWIG .i files

```
I'd like to propose three enhancements:

1. Support the Streaming API. I believe this can be done via libcurl, but I
haven't tried it yet.

2. Return objects in JSON format in addition to or instead of XML. JSON is
much more compact, and quite a few modern "non-SQL" databases store objects
in JSON format, eliminating a conversion step.

3. Create SWIG ".i" files for the library. SWIG http://www.swig.org/ is a
wrapper generator. If you create interface .i files, SWIG can generate
wrapper code for nearly all higher-level languages, including Perl, PHP,
Ruby, Lisp, Scheme, Java and R.

I'm going to be working independently on 1. - I haven't had much experience
with libcurl, but I do have wrappers for Perl and R, so I don't need to
work in C/C++. I am not a C++ programmer, so I wouldn't be able to submit
patches for 2. or 3.
```

Original issue reported on code.google.com by `zznmeb@gmail.com` on 20 Jan 2010 at 6:07