units: synchronize with shutdown.target

units/fedora/killall.service

@@ -17,6 +17,7 @@
 
 [Unit]
 Description=Kill All Processes
+After=shutdown.target
 
 [Service]
 Type=finish

units/fedora/prefdm.service

@@ -19,6 +19,7 @@
 Description=Display Manager
 Before=graphical.target
 After=basic.target syslog.target messagebus.service haldaemon.service
+Conflicts=shutdown.target
 
 [Service]
 ExecStart=/etc/X11/prefdm -nodaemon

units/fedora/rc-local.service

@@ -18,6 +18,7 @@
 [Unit]
 Description=/etc/rc.local Compatibility
 Requires=basic.target
+Conflicts=shutdown.target
 
 # The rcN.d symlink uses the name "local" while the script itself is
 # called "rc.local", hence carry both names here.

units/getty@.service.m4

@@ -23,6 +23,7 @@ m4_dnl
 Description=Getty on %I
 Before=getty.target
 After=basic.target
+Conflicts=shutdown.target
 
 [Service]
 Type=simple