update TODO
units: make sure container-getty@.service stops restarting when the pts device it is bound to is gone

We only want to restart the getty as long as the pts device is still
around. As soon as it is gone, the service should be removed to.

http://lists.freedesktop.org/archives/systemd-devel/2014-December/026048.html
fstab-generator: free all allocated strings
fstab-generator: Allow mount.usr without mount.usrflags, honor rw/ro

There is no need to require mount.usrflags. The original implementation
assumed that a btrfs subvolume would always be needed but that is not
applicable to systems that do not use btrfs for /usr.

Similar to using rootflags= for the default of mount.usrflags=, append
the classic 'ro' and 'rw' flags to the mount options.
cgroup: Handle error when destroying cgroup

If a cgroup fails to be destroyed (most likely because there are still
processes running as part of a service after the main pid exits), don't
free and remove the cgroup unit from the manager.  This fixes a
regression introduced by the cgroup rework in v205 where systemd would
forget about processes still running after the unit becomes inactive.
(This can happen when the main pid exits and KillMode=process or none).
core: rename unit_destroy_cgroup() to unit_destroy_cgroup_if_empty() since it's not quite as destructive as it sounds nowadays