Get rid of hostname utility

dracut doesn't really need a utility to set the hostname. It only
saves a few ks of space, but every bit is good.

modules.d/40network/dhclient-script

@@ -39,7 +39,7 @@ setup_interface() {
 	done
     fi >> /tmp/resolv.conf
 
-    [ -n "$hostname" ] && echo hostname $hostname > /tmp/net.$netif.hostname
+    [ -n "$hostname" ] && echo "echo $hostname > /proc/sys/kernel/hostname" > /tmp/net.$netif.hostname
 }
 
 PATH=$PATH:/sbin:/usr/sbin

modules.d/40network/ifup

@@ -40,7 +40,7 @@ do_static() {
     } > /tmp/net.$netif.up
 
     [ -n "$gw" ] && echo ip route add default via $gw dev $netif > /tmp/net.$netif.gw
-    [ -n "$hostname" ] && echo hostname $hostname > /tmp/net.$netif.hostname
+    [ -n "$hostname" ] && echo "echo $hostname > /proc/sys/kernel/hostname" > /tmp/net.$netif.hostname
 
     echo online > /sys/class/net/$netif/uevent
     /sbin/initqueue --onetime --name netroot-$netif  /sbin/netroot $netif 

modules.d/40network/install

@@ -1,5 +1,5 @@
 #!/bin/bash
-dracut_install ip dhclient hostname brctl
+dracut_install ip dhclient brctl
 inst "$moddir/ifup" "/sbin/ifup"
 inst "$moddir/netroot" "/sbin/netroot"
 inst "$moddir/dhclient-script" "/sbin/dhclient-script"