Import libuv-1.0.1 as wip/libuv.

libuv is used as the platform layer for node.js

libuv enforces an asynchronous, event-driven style of programming.
Its core job is to provide an event loop and callback based
notifications of I/O and other activities.  libuv offers core
utilities like timers, non-blocking networking support, asynchronous
file system access, child processes and more.
Remove non-building libuv