units: Provide separate fsck.target for Debian

On Debian sysinit is not a single script but a separate runlevel.
Split of fsck.target into separate unit file as otherwise we get an
unbreakable cycle on shutdown/reboot.

Makefile.am

@@ -235,7 +235,8 @@ dist_systemunit_DATA += \
 	units/debian/halt.service \
 	units/debian/killall.service \
 	units/debian/poweroff.service \
-	units/debian/reboot.service
+	units/debian/reboot.service \
+	units/debian/fsck.target
 endif
 
 if TARGET_SUSE
@@ -961,10 +962,12 @@ if TARGET_GENTOO
 		$(LN_S) $(systemunitdir)/xdm.service xdm.service )
 endif
 if !TARGET_SUSE
+if !TARGET_DEBIAN
 	( cd $(DESTDIR)$(systemunitdir) && \
 		rm -f fsck.target && \
 		$(LN_S) sysinit.target fsck.target )
 endif
+endif
 
 DISTCHECK_CONFIGURE_FLAGS = \
 	--with-dbuspolicydir=$$dc_install_base/$(dbuspolicydir) \

units/debian/fsck.target

@@ -0,0 +1,11 @@
+#  This file is part of systemd.
+#
+#  systemd is free software; you can redistribute it and/or modify it
+#  under the terms of the GNU General Public License as published by
+#  the Free Software Foundation; either version 2 of the License, or
+#  (at your option) any later version.
+
+# See systemd.special(7) for details
+
+[Unit]
+Description=File System Check

units/sysinit.target.m4

@@ -24,6 +24,8 @@ Requires=sysinit.service
 After=sysinit.service
 )m4_dnl
 m4_ifdef(`TARGET_SUSE',`',
-m4_dnl On Suse, fsck.target is seperate, everywhere else it is just an alias for sysinit.target
+m4_ifdef(`TARGET_DEBIAN',`',
+m4_dnl On Suse and Debian fsck.target is separate, everywhere else it is just an alias for sysinit.target
 Names=fsck.target
 )m4_dnl
+)m4_dnl