MFC 281887:
Reassign copyright statements on several files from Advanced
Computing Technologies LLC to Hudson River Trading LLC.

MFC 266322,266323:
- Use 'RESOURCE' instead of the more generic 'TYPE' for the resource name
column header when displaying resource usage. This more closely matches
other procstat displays.
- Add descriptions of the display formats for -e, -l, -r, and -x. Fix a few
typos in indent settings while here.

MFC 266293:
- Add support for dumping current resource usage for processes via a new -r
flag to procstat.
- Add an -H flag to request information about threads rather than processes
when dumping statistics. Currently it is only used for -r to display
resource usage for individual threads instead of the entire process.

MFC 281887:
Reassign copyright statements on several files from Advanced
Computing Technologies LLC to Hudson River Trading LLC.

MFC 266322,266323:
- Use 'RESOURCE' instead of the more generic 'TYPE' for the resource name
column header when displaying resource usage. This more closely matches
other procstat displays.
- Add descriptions of the display formats for -e, -l, -r, and -x. Fix a few
typos in indent settings while here.

MFC 266293:
- Add support for dumping current resource usage for processes via a new -r
flag to procstat.
- Add an -H flag to request information about threads rather than processes
when dumping statistics. Currently it is only used for -r to display
resource usage for individual threads instead of the entire process.