K 10
svn:author
V 6
kevans
K 8
svn:date
V 27
2018-08-08T21:37:02.338582Z
K 7
svn:log
V 283
dd: add status=progress support

This reports the current status on a single line every second, mirroring
similar functionality in GNU dd, and carefully interacts with SIGINFO.

PR:		229615
Submitted by:	Thomas Hurst <tom@hur.st> (modified for style(9) nits by me)
MFC after:	1 week

END