Allow ZFS for /usr or /var, when the root filesystem is not ZFS.

zfs-utils-git/zfs-utils.initcpio.hook

@@ -1,3 +1,5 @@
+#!/usr/bin/ash
+
 ZPOOL_FORCE=""
 
 zfs_get_bootfs () {
@@ -67,6 +69,9 @@ run_hook() {
     fi
 
     case $zfs in
+        "")
+            # skip this line/dataset
+            ;;
         auto|bootfs)
             ZFS_DATASET='bootfs'
             mount_handler="zfs_mount_handler"
@@ -88,4 +93,9 @@ run_hook() {
     done
 }
 
+
+run_latehook () {
+    /usr/bin/zpool import -N -a $ZPOOL_FORCE
+}
+
 # vim:set ts=4 sw=4 ft=sh et: