fcntl F_SETLKW64

[Romeril, Alan]

Hi Jeremy,
	Yes this seems to work fine now.  No pegging the cpu on fcntl
F_SETLKW64.
Also the 2000 profile loading is much faster, but there still seems to
be a locking issue affecting some of our users. 

Messages like this appear in the logs..

[2001/12/20 18:42:08, 0] smbd/oplock.c:oplock_break(833)
  oplock_break: client failure in oplock break in file
pc/hh-ccs1.pds/templates/netscape.htm
[2001/12/20 18:42:08, 0] smbd/reply.c:reply_lockingX(4384)
  reply_lockingX: Error : oplock break from client for fnum = 4659 and
no oplock granted on this file (pc/hh-ccs1.pds/templates/netscape.htm).