K 10
svn:author
V 7
rgrimes
K 8
svn:date
V 27
2018-04-05T15:00:08.787057Z
K 7
svn:log
V 168
Exit with usage when extra arguments are on command line
preventing mistakes such as "halt 0p" for "halt -p".
Approved by:	bde (mentor), phk (mentor)
MFC after:	1 week

END