add uv udp try send

Please review the commits and give me comments on them.
Nothing, let's leave it as is. It was inlined on Windows, but not anymore.
I think its OK.
On Jul 4, 2014 1:13 PM, "Andrius Bentkus" <notifications@github.com> wrote:

> In src/uv-common.c:
>
> > @@ -446,6 +466,19 @@ int uv__getaddrinfo_translate_error(int sys_err) {
> >    return 0;  /* Pacify compiler. */
> >  }
> >
> > +
> > +size_t uv__count_bufs(const uv_buf_t bufs[], unsigned int nbufs) {
>
> What do I have to do with the do { } while (0) ?
>
> —
> Reply to this email directly or view it on GitHub
> <https://github.com/joyent/libuv/pull/1344/files#r14556222>.
>