nixos: Add ZFS auto-snapshotting module
Merge branch 't/auto-upd-kernel' into t/all
Merge branch 't/grsec-fix-build' into t/all

Conflicts:
	pkgs/top-level/all-packages.nix
Merge branch 't/grsec-module' into t/all
Merge branch 't/grsec-wip' into t/all
Merge branch 't/grsecurity' into t/all
Merge branch 't/inetutils' into t/all
Merge branch 't/ipmiutil' into t/all
Merge branch 't/kernel-override' into t/all
Merge branch 't/knetwalk' into t/all
Merge branch 't/memtest' into t/all
Merge branch 't/nixops-unstable' into t/all
Merge branch 't/vimrc' into t/all
Merge branch 't/xfs' into t/all
Merge branch 't/zfs-autosnap' into t/all
Merge branch 't/zfs-import' into t/all

Conflicts:
	nixos/modules/tasks/filesystems/zfs.nix
Merge branch 't/zfstools' into t/all
zfs fix
Revert "inetutils: Fix build due to missing PATH_PROCNET_DEV definition"

This reverts commit ae0d92d1ffe9557207b3e4cde30d1d2aae77f3a8.
XXX: Make sure the default kernel never gets built