K 10
svn:author
V 3
mjg
K 8
svn:date
V 27
2014-08-28T08:41:11.670162Z
K 7
svn:log
V 235
Return real parent pid in kinfo (used by e.g. ps)

Add a separate field which exports tracer pid and add a new keyword
("tracer") for ps to display it.

This is a follow up to r270444.

Reviewed by:	kib
MFC after:	1 week
Relnotes:	yes

END