Experimental patch to support large MS-DOS filesystems

If you're feeling adventurous and have access to a relatively large 
MS-DOS formatted disk that gives a "disk too big, sorry" error when you 
try to mount it, please try out this patch and let me know how it goes:
http://people.freebsd.org/~tjr/fileno32.diff
(http://perforce.freebsd.org/chv.cgi?CH=40907)

I don't have access to disks big enough to cause the error message, so 
don't be surprised if it doesn't work. Although there is very little 
chance of it causing data loss, it'd be best to try it on a read-only 
filesystem first, and to make sure that you have backups.


Tim