fleet: bump to v0.9.0
sys-apps/systemd: bump to v216

Enable the vanilla USE flag by default.
sys-apps/util-linux: bump to v2.25.2
sys-apps/systemd: bump to v217

- Drop the ldconfig patch, now handled in the initrd.
- Shrink the delta with Gentoo where possible.
- Add missing polkit rule, was only in 215 ebuild.
- Always run eautoreconf, required by the -Wl-fuse-ld patch.
- Use "disable" as our one and only unit preset rule.
- Disable the "First Boot Wizard" which isn't useful on CoreOS.

Also-by: Michael Marineau <michael.marineau@coreos.com>
dbus: import latest stable version from Gentoo, 1.8.10
dbus: apply our local changes from old versions to 1.8.10
bootengine: updates for systemd 217
baselayout: updates for systemd 217
coretest: update for systemd 217
chore(metadata): Regenerate cache
Merge pull request #985 from marineam/systemd

Systemd 217
grub: include new partition search commands
Merge pull request #986 from marineam/grub

grub: include new partition search commands
hard-host-depends: remove a couple unused graphic utilities
config: fix cross-compiled cmake build

The upstream cmake eclass has started properly building cmake in
cross-compiler mode so it doesn't attempt to run native code. Without
those checks the test results need to be defined statically.
coreos-kernel: update to 3.17.6
Merge pull request #988 from marineam/kernel

coreos-kernel: update to 3.17.6
Merge pull request #987 from marineam/updates

Prepare for updating portage-stable
bootengine: remove kexec, allow new mount.usr kernel option
update_engine: support updating systems with new GRUB configuration