Deep nesting attributes

[acras]

When using nested attributes whit more than 2 levels, restfulx framework ignores the recursive parameter.

looking in VOSerializer.as function marshallToVo it passes a hard coded false to the recursive parameter when calling itself recursively if it isHasMany node.

Changing it to true will not work because in XMLHTTPServiceProvider´s marshallToVO once again it takes the recursive option only one level deep.

[acras]

I just pushed a modification that inserts deep nesting to the framework (https://github.com/acras/restfulx_framework). I don´t think it is good enough to pull to the base, but it is working for me fine. If you think it´s a good idea I can polish the code and make a pull request.