2012.01.06, Version 0.6.7 (stable)

* V8 hash collision fix (Breaks MIPS) (Bert Belder, Erik Corry)

* Upgrade V8 to 3.6.6.15

* Upgrade npm to 1.1.0-beta-10 (isaacs)

* many doc updates (Ben Noordhuis, Jeremy Martin, koichik, Dave Irvine,
  Seong-Rak Choi, Shannen, Adam Malcontenti-Wilson, koichik)

* Fix segfault in node_http_parser.cc

* dgram, timers: fix memory leaks (Ben Noordhuis, Yoshihiro Kukuchi)

* repl: fix repl.start not passing the `ignoreUndefined` arg (Damon Oehlman)

* #1980: Socket.pause null reference when called on a closed Stream (koichik)

* #2263: XMLHttpRequest piped in a writable file stream hang (koichik)

* #2069: http resource leak (koichik)

* buffer.readInt global pollution fix (Phil Sung)

* timers: fix performance regression (Ben Noordhuis)

* #2308, #2246: node swallows openssl error on request (koichik)

* #2114: timers: remove _idleTimeout from item in .unenroll() (James Hartig)

* #2379: debugger: Request backtrace w/o refs (Fedor Indutny)

* simple DTrace ustack helper (Dave Pacheco)

* crypto: rewrite HexDecode without snprintf (Roman Shtylman)

* crypto: don't ignore DH init errors (Ben Noordhuis)
