Description of problem:
Enable the 'autostart' for a running guest, it seems take effect when checking
dominfo. But after reboot the host, the guest doesn't automatically start but actually in shutoff status.

Version-Release number of selected component (if applicable):
- kernel-2.6.32-24.el6.i686
- libvirt-0.8.1-1.el6.i686

How reproducible:
Always

Steps to Reproduce:
1. # cat vm1.xml
<domain type='lxc'>
 <name>vm1</name>
 <memory>500000</memory>
 <os>
  <type>exe</type>
  <init>/bin/sh</init>
 </os>
 <vcpu>1</vcpu>
 <clock offset='utc'/>
 <on_poweroff>destroy</on_poweroff>
 <on_reboot>restart</on_reboot>
 <on_crash>destroy</on_crash>
 <devices>
  <emulator>/usr/libexec/libvirt_lxc</emulator>
  <interface type='network'>
   <source network='default'/>
  </interface>
  <console type='pty' />
 </devices>
</domain>
2. # virsh define vm1.xml

3. # virsh start vm1
Domain vm1 started

4.# virsh list --all
 Id Name                 State
----------------------------------
4584 vm1                  running
  - fedora-rawhide       shut off

5. # virsh autostart vm1
Domain vm1 marked as autostarted

6. # virsh dominfo vm1
Id:             2577
Name:           vm1
UUID:           05a58f1a-a738-be83-99f2-3b27af79b66b
OS Type:        exe
State:          running
CPU(s):         1
CPU time:       0.0s
Max memory:     500000 kB
Used memory:    364 kB
Autostart:      enable

7. Reboot host

8. After host is rebooted,  # virsh list --all
 Id Name                 State
----------------------------------
  - fedora-rawhide       shut off
  - vm1                  shut off


# virsh dominfo vm1
Id:             -
Name:           vm1
UUID:           05a58f1a-a738-be83-99f2-3b27af79b66b
OS Type:        exe
State:          shut off
CPU(s):         1
Max memory:     500000 kB
Used memory:    500000 kB
Autostart:      enable



Actual results:
After reboot the host, the guest didn't automatically start.

Expected results:
After reboot the host, the guest should automatically start.