zed: allow clean exit on OSX (ioctl return ENODEV)
zed: allow startup to wait for kext with -f
zed: allow return to waiting for kext -f
Merge branch 'master' of github.com:openzfsonosx/zfs
.zfs; fix panic iocount < 1"@/SourceCache/xnu/xnu-2422.90.20/bsd/vfs/vfs_subr.c:4108
Enable .zfs by default again.
Add zed event to remove cache file, and appropriate script.