K 10
svn:author
V 3
des
K 8
svn:date
V 27
2013-04-29T20:13:09.990083Z
K 7
svn:log
V 177
Add a -Z option which zeroes unused blocks.  It can be combined with -E,
in which case unused blocks are first zeroed and then erased.

Reviewed by:	mckusick
MFC after:	3 weeks

END