[OpenAFS] Windows file locking do not work on IFS client.

[Anders Magnusson]

Environment:
Server:  OpenAFS 1.4.12.1, Redhat 5.3
Client: Windows 7, OpenAFS 1.7.1

It seems that file locking has stopped working in the new client, 
resulting in data corruption :-/

Simple test case:

- Have two Win7 clients
- Open a .xlsx document in Office 2010 on one of them.
- Open the same document on the second machine.  No complaints.
- Write something in the document on the first machine, save it and quit.
- Write something in the document on the second machine, save it and quit.

The first thing written is now gone.

Setting EnableServerLocks to 2 do not help.  The document just does not 
seem to be locked.

If a file is opened with an older SMB client then the IFS client 
understands it, and tells that
it is locked on the Win7 machine.

Any hints?  Something missed to be configured?

-- Ragge