Define equals and hashcode for DirectPosition

We found that several are of our geometry operations are failing when faced with mixed implementations of DirectPosition equals (and hashcode). We would like operations to work out regardless of if a Position (could be a Point) or DirectPosition is used...

We considered seperating:

• equals( Position ) perform a check based on CRS and the ordinates
• equals( Object ) leave as an == check

Right now we are a bit stuck and checking for the same CRS.... but the show must go on. We will do an == check.