Rename author 'Stephen Rintoul' to 'Stephen R. Rintoul'

This author contributed to AR5 and AR4:
http://www.csiro.au/Organisation-Structure/Divisions/Marine--Atmospheric-Research/SteveRintoul.aspx
http://www.csiro.au/Organisation-Structure/Divisions/Marine--Atmospheric-Research/NobelPeacePrizeWinners.aspx

This name appears in AR5.