Remove remaining uses of mkOverrideTemplate
Implement services.httpd.virtualHosts using the module system
Remove obsolete function addDefaultOptionValues
Fix nixos-option

In particular, it no longer produces an "infinite recursion" error
when run with no arguments.
Fix mkOverride call
Don't copy Nix expressions to the store while processing Apache subservices
Fix evaluation error in the tomcat test
optipng: update to 0.7.4

close #1138.
Adding a facility to generate Lisp module definitions from QuickLisp; no sane update facility yet; adding Esrap-PEG as a test
Adding upstream tracker for quantum minigolf
A few hooks for easier library handling when CFFI is used
libedit: 20100424-3.0 -> 20130712-3.1
pythonPackages.substanced: specify sha256
nix: Update to 1.6.1
nixos: zope2 service: adding clientHome option
wpa_supplicant.nix: Add option types
Add a priority level for overrides in VM tests

Now that overriding fileSystems in qemu-vm.nix works again, it's
important that the VM tests that add additional file systems use the
same override priority.  Instead of using the same magic constant
everywhere, they can now use mkVMOverride.

http://hydra.nixos.org/build/6695561
Drop the EFI installer tests from the release-critical builds for now

They fail randomly due to a hard-coded 30-second timeout in udev
waiting for /dev/sda1 to appear:

  systemd-udevd[1151]: worker [1168] /devices/pci0000:00/0000:00:04.0/host2/target2:0:0/2:0:0:0/block/sda/sda1 timeout; kill it
  systemd-udevd[1151]: seq 1059 '/devices/pci0000:00/0000:00:04.0/host2/target2:0:0/2:0:0:0/block/sda/sda1' killed

Hopefully we can use virtio in the future for the EFI tests.

http://hydra.nixos.org/build/6695897
nixos-rebuild build-vm: Ignore the user's LUKS devices
linux: Update to 3.2.52