* v8: update to 3.14.5.9

* uv: upgrade to 0.10.8

* npm: Upgrade to 1.2.23

* http: remove bodyHead from 'upgrade' events (Nathan Zadoks)

* http: Return true on empty writes, not false (isaacs)

* http: save roundtrips, convert buffers to strings (Ben Noordhuis)

* configure: respect the --dest-os flag consistently (Nathan Rajlich)

* buffer: throw when writing beyond buffer (Trevor Norris)

* crypto: Clear error after DiffieHellman key errors (isaacs)

* string_bytes: strip padding from base64 strings (Trevor Norris)