nix-exec: bump
Adding an extra url for nc6. The previous was failing.
cjdns: update 20140928 to 20141023
Merge pull request #4658 from ehmry/cjdns

cjdns: update 20140928 to 20141023
libyubikey: Reformat derivation
hidapi: Add derivation
libu2f-host: Add derivation
libykneomgr: Add derivation
yubikey-personalization: Add derivation
yubikey-personalization-gui: Add derivation
bigloo: 3.7a -> 4.1a-2

Signed-off-by: Austin Seipp <aseipp@pobox.com>
ruby: Fix build on systems with store optimisation. Closes #4273. #4266 promises a better fix.

(The build process attempted to copy file a overwriting file b, where a
and b are hard-linked, which results in cp returning a non-zero exit
code.)
https://github.com/NixOS/nixpkgs/issues/4266
gambit: 4.6.1 -> 4.7.3

Signed-off-by: Austin Seipp <aseipp@pobox.com>
Merge branch 'master' of https://github.com/nixos/nixpkgs

Conflicts:
	pkgs/development/interpreters/ruby/ruby-20.nix