crypto: update root certificates

Update tools/certdata.txt to https://hg.mozilla.org/mozilla-central/raw-file/64206634959a/security/nss/lib/ckfw/builtins/certdata.txt (last updated on 2014-11-14) and rebuild src/node_root_certs.h.

Refs joyent/node#8679 and joyent/node#8709.

R=@indutny @tjfontaine