Enhancements to sinfo reservation output

I would like to make two changes to this:

1) since the reservation name can easily exceed 9 characters, I would like the field to be however large it needs to be without truncating the name. I did this by looking at the names then setting the field size to that width.

2) The other headers are in capitals, so I changed

 ResName    State       StartTime             EndTime           Duration  Nodelist

to

RESV_NAME        STATE           START_TIME            END_TIME     DURATION  NODELIST