Merge remote-tracking branch 'remotes/stefanha/tags/net-pull-request' into staging

Merge remote-tracking branch 'remotes/stefanha/tags/net-pull-request' into staging

# gpg: Signature made Mon 12 Jan 2015 10:27:41 GMT using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <[email protected]>"
# gpg:                 aka "Stefan Hajnoczi <[email protected]>"

* remotes/stefanha/tags/net-pull-request:
  hw/net/xen_nic.c: Set 'netdev->mac' to NULL after free it
  hw/net/xen_nic.c: Need free 'netdev->nic' in net_free() instead of net_disconnect()
  hw/net/xen_nic.c: Free 'netdev->txs' when map 'netdev->rxs' fails
  net: remove all cleanup methods from NIC NetClientInfos

Signed-off-by: Peter Maydell <[email protected]>