Add libuv.c3l to vendor

[velikoss]

No description provided.

[lerno]

Can you make the c3i conform to C3 stdlib layout (tabs, Allman braces)? I'm making an effort to start auditing vendor to give them a uniform style. Then we can add this.

[velikoss]

Okay, will do that

[lerno]

Also, the commented out sections should not be there. Either they're in or they're not. Nothing commented out, because that just confuses people. You can keep them in your local copy of course.