ps: exploit the library addition for 'cpu utilization'
This just parallels the top program by adding that new
library PIDS_UTILIZATION item to the ps repertoire. It
should be noted, however, that the new %CUU field is a
little redundant. I mean, ps already has 4 such fields
implemented identified as: '%cpu', 'c', 'cp' & 'pcpu'.
Oh well, at least the newest one offers a little value
added in the form of extra precision. We'll follow the
top lead and display results in the form of: '##.###'.
Signed-off-by: Jim Warner <james.warner@comcast.net>