build: use separate env vars for signing
2013.07.09, Version 0.10.13 (Stable)

* uv: Upgrade to v0.10.12

* npm: Upgrade to 1.3.2

* windows: get proper errno (Ben Noordhuis)

* tls: only wait for finish if we haven't seen it (Timothy J Fontaine)

* http: Dump response when request is aborted (isaacs)

* http: use an unref'd timer to fix delay in exit (Peter Rust)

* zlib: level can be negative (Brian White)

* zlib: allow zero values for level and strategy (Brian White)

* buffer: add comment explaining buffer alignment (Ben Noordhuis)

* string_bytes: properly detect 64bit (Timothy J Fontaine)

* src: fix memory leak in UsingDomains() (Ben Noordhuis)