cluster: test events emit on cluster.worker

v0.10 and node docs specific that in a worker, the 'message' and 'error'
event emits on process, and on cluster.worker.

Reviewed-By: Fedor Indutny <fedor@indutny.com>
Revert "repl: fix overwrite for this._prompt"

This reverts commit 7166b55015261de8ab69758320f3d9159b3eaadd.
repl: proper `setPrompt()` and `multiline` support

fix #8031
Cluster: fix shared handles on Windows

This is the Node side of the fix for Node's cluster module on Windows.
https://github.com/joyent/node/issues/7691

The other required part is
https://github.com/joyent/libuv/pull/1384

Windows and Unix return certain socket errors (i.e. EADDRINUSE) at
different times: bind on Windows, and listen on Unix.
In an effort to hide this difference, libuv on Windows stores such
errors in the bind_error field of uv_tcp_t, to defer raising it at
listen time.
This worked fine except for the case in which a socket is shared in
a Node cluster and a bind error occurs.

A previous attempt to fix this (
https://github.com/joyent/libuv/commit/d1e6be1460f555a1f8a4063d7642696aa7238769
https://github.com/joyent/node/commit/3da36fe00e5d85414031ae812e473f16629d8645
) was flawed becaused in an attempt to relay the error at the JS level
it caused the master to start accepting connections.

With this new approach, libuv itself is relaying the bind errors,
providing for a uniform behavior of uv_tcp_listen.

Reviewed-By: Fedor Indutny <fedor@indutny.com>
Revert "Cluster: fix shared handles on Windows"

This reverts commit 4e68a28e20b348f3519b359a17fcb941b235202b.
Merge remote-tracking branch 'upstream/master'