Stella 4.0: New Package

Stella is an Atari 2600 VCS emulator
nfsd: Make it possible to fix rpc.{mountd,statd,lockd} ports.
cjdns: new declarative service expression

systemd service wants network-interfaces.target rather than network.target
assertion on config.networking.enableIPv6
cjdns: package update from 20140303 to 20140829
openldap: fix build on darwin
sysdig: cheat nix into not capturing linux-dev as a runtime dependency
boinc: update from 7.2.42 to 7.4.14 (fixes CVE-2013-2298)
Merge pull request #3917 from lovek323/openldap

openldap: fix build on darwin
Merge pull request #3241 from ehmry/cjdns

cjdns declarative configuration
Merge pull request #3911 from vlstill/nfs-port_pullreq

nfsd: Make it possible to fix rpc.{mountd,statd,lockd} ports.
Merge pull request #3925 from proger/sysdig-no-kernel-dev

sysdig: cheat nix into not capturing linux-dev as a runtime dependency
Merge pull request #3905 from AndersonTorres/stella

Stella 4.0: New Package