Xen devel - Sep 2013 - [PATCH net v3 0/1] xen-netback: windows frontend compatibility fixes

The following patches fix a couple more issues found when testing with
Windows frontends.

v3:
- Collapse both v2 patches into a single patch that introduces a new
  function to handle backend state transtions. By doing this we ensure that
  we always transition through intermediate states and that we don''t
attempt
  repeated connects or disconnects.

v2:
- Add comment in 2/2 to note that state transitions from Connected to Closed
  are incorrect.