K 10
svn:author
V 7
trociny
K 8
svn:date
V 27
2013-06-30T08:36:19.855936Z
K 7
svn:log
V 140
MFC r250378:

Make errbuf optional, so if a caller is not interested in an error
message she can pass NULL (procstat(1) already does this).

END