2014.06.09, Version 0.8.27 (maintenance)

* openssl: update to 1.0.0m (CVE-2014-0224)

* utf8: Prevent Node from sending invalid UTF-8 (Felix Geisendörfer)
  - *NOTE* this introduces a breaking change, previously you could construct
invalid UTF-8 and invoke an error in a client that was expecting valid
UTF-8, now unmatched surrogate pairs are replaced with the unknown UTF-8
character. To restore the old functionality simply have NODE_INVALID_UTF8
environment variable set.

* tls: fix pool usage race (Fedor Indutny)

* fs: close file if fstat() fails in readFile() (cjihrig)
build: support individual signing keys
Merge branch 'v0.8.27-release' into v0.8
Now working on 0.8.28
Merge remote-tracking branch 'upstream/v0.8' into v0.8