Modify o92util.f
Modify o92util.f

1. Big changes to automatic options:
   - change usage and gcmdln to have automatic option
     be -auto AB VAL INCR
   - options for horizontal and vertical slices
   - add subroutines to support automatic options
     - shift(), centroid(), strike()
   - keep old automatic options as comments

mherman09/Hdef,mherman09/Hdef,mherman09/Hdef