[libvirt] [PATCH]: Update ruby-libvirt migrate binding to use rb_scan_args

[Chris Lalancette]

Chris Lalancette wrote:
> It's really not a good idea to hand parse variable number of args to a ruby
> binding, like I implemented for the "migrate" method.  Convert this to use
> rb_scan_args, which is the proper way to do it, and matches all of the other
> variable argument implementations in the binding.

Committed.

Chris Lalancette