Added tag 0.11.0.420 for changeset 4117d4207433
Add export methods to retrieve and set the hypercall stubs for the dump_xenpci driver
Get hypercall_stubs on xenvbd init, and restore them on crash.
Add missed header change for retrieve/set hypercall_stubs
Ignore notepad++ session files
Tidy up asserts in xennet. Add a few new ones.
Make state transitions a bit more flexible in xenvbd to allow startup in BSD Dom0
Update version numbering to <major>.<minor>.<hg revision>[.<build number>]
Fix race where storport dpc could be called before it was initialised