K 10
svn:author
V 3
kib
K 8
svn:date
V 27
2013-02-01T18:25:53.190632Z
K 7
svn:log
V 219
Backup FATs were sometimes marked dirty by copying their first block
from the primary FAT, and then they were not marked clean on unmount.
Force marking them clean when appropriate.

Submitted by:	bde
MFC after:	1 week

END