better name of zfs variable

Makefile

@@ -70,7 +70,7 @@ $(DESTDIR)$(service_directory)/%: service/%
 		-e "s,@DMRAID@,$(DMRAID)," \
 		-e "s,@BTRFS@,$(BTRFS)," \
 		-e "s,@ZFS@,$(ZFS)," \
-		-e "s,@ZPOOL@,$(ZPOOL)," \
+		-e "s,@ZFS_IMPORT@,$(ZFS_IMPORT)," \
 		-e "s,@CRYPTTAB@,$(CRYPTTAB)," \
 		-e "s,@IPTABLES@,$(IPTABLES)," \
 		-e "s,@IP6TABLES@,$(IP6TABLES)," \

configure

@@ -49,7 +49,7 @@ Fine tunning of boot configuration:
   --DMRAID=BOOLEAN                 mount dmraid devices [!no]
   --BTRFS=BOOLEAN                  mount btrfs devices [!no]
   --ZFS=BOOLEAN                    mount zfs devices [!no]
-  --ZPOOL=VALUE                    zpool method to import zfs devices [!scan]
+  --ZFS_IMPORT=VALUE               zpool method to import zfs devices [!scan]
   --CRYPTTAB=BOOLEAN               use crypttab by default [!no]
   --IPTABLES=BOOLEAN               use iptables by default [!no]
   --IP6TABLES=BOOLEAN              use ip6tables by default [!no]
@@ -164,7 +164,7 @@ LVM='!no'
 DMRAID='!no'
 BTRFS='!no'
 ZFS='!no'
-ZPOOL='!scan'
+ZFS_IMPORT='!scan'
 CRYPTTAB='!no'
 IPTABLES='!no'
 IP6TABLES='!no'
@@ -221,7 +221,7 @@ for arg ; do
     --DMRAID=*) DMRAID=${arg#*=} ;;
     --BTRFS=*) BTRFS=${arg#*=} ;;
     --ZFS=*) ZFS=${arg#*=} ;;
-    --ZPOOL=*) ZPOOL=${arg#*=} ;;
+    --ZFS_IMPORT=*) ZFS_IMPORT=${arg#*=} ;;
     --CRYPTTAB=*) CRYPTTAB=${arg#*=} ;;
     --IPTABLES=*) IPTABLES=${arg#*=} ;;
     --IP6TABLES=*) IP6TABLES=${arg#*=} ;;
@@ -292,7 +292,7 @@ done
 for i in HOSTNAME HARDWARECLOCK TZ SETUPCONSOLE TTY \
 		KEYMAP FONT FONT_MAP FONT_UNIMAP UDEV SYSCTL FORCECHCK LOCAL CONTAINER \
 		TMPFILE MODULE_KERNEL MODULE_SYSTEM RANDOMSEED \
-		FSTAB SWAP LVM DMRAID BTRFS ZFS ZPOOL \
+		FSTAB SWAP LVM DMRAID BTRFS ZFS ZFS_IMPORT \
 		CRYPTTAB IPTABLES IP6TABLES  \
 		CGROUPS MNT_PROC MNT_SYS MNT_DEV MNT_RUN MNT_TMP \
 		MNT_PTS MNT_SHM MNT_NETFS POPULATE_SYS POPULATE_DEV POPULATE_RUN POPULATE_TMP ; do
@@ -365,7 +365,7 @@ $LVM
 $DMRAID
 $BTRFS
 $ZFS
-$ZPOOL
+$ZFS_IMPORT
 $CRYPTTAB
 $IPTABLES
 $IP6TABLES

module/boot@/configure/configure

@@ -151,7 +151,7 @@ if [ "${CONTAINER}" = "yes" ]; then
 fi
 
 if [ "${ZFS}" = "yes" ]; then
-	if [ "${ZPOOL}" = "cache" ]; then
+	if [ "${ZFS_IMPORT}" = "cache" ]; then
 		sv_comment_real "devices-zfs-import-scan"
 	else
 	# set default to scan

service/boot@

@@ -150,10 +150,10 @@
 
 @ZFS@
 
-## Zpool method to import zfs devices [scan|cache]
+## Zpool method to import zfs devices [scan|zpoolcache]
 ## It has no effects if ZFS is commented.
 
-@ZPOOL@
+@ZFS_IMPORT@
 
 #========================== Security ===================================