npm: Update to v1.4.23
2014.08.19, Version 0.10.31 (Stable)

* v8: backport CVE-2013-6668

* openssl: Update to v1.0.1i

* npm: Update to v1.4.23

* cluster: disconnect should not be synchronous (Sam Roberts)

* fs: fix fs.readFileSync fd leak when get RangeError (Jackson Tian)

* stream: fix Readable.wrap objectMode falsy values (James Halliday)

* timers: fix timers with non-integer delay hanging. (Julien Gilli)