TAKE - Fix create/unlink race on the same inode #.

[Ted Kline <jtk@xxxxxxx>]

Modid:  2.3.99pre2-xfs:slinx:62919a
Date:  Fri May 26 11:08:06 PDT 2000
Workarea:  tiki.cray.com:/data/clink/io/jtk/work-linux2.3-99

The following file(s) were checked into:
  bonnie.engr.sgi.com:/isms/slinx/2.3.99pre2-xfs

linux/fs/xfs/xfs_iget.c - 1.116
http://oss.sgi.com/cgi-bin/cvsweb.cgi/linux-2.4-xfs/linux/fs/xfs/xfs_iget.c.diff?r1=text&tr1=1.116&r2=text&tr2=1.115&f=h
        - In xfs_iget(), do the vn_get() under protection of the hash queue
          lock in order to guarantee that the linux inode address is truly
          valid at the moment we're looking for the I_FREEING flag.