Added Tick versions of all constants.
Added Tick versions of all constants.

BenJenkinson/nodatime,zaccharles/nodatime,zaccharles/nodatime,zaccharles/nodatime,BenJenkinson/nodatime,malcolmr/nodatime,jskeet/nodatime,zaccharles/nodatime,jskeet/nodatime,nodatime/nodatime,malcolmr/nodatime,malcolmr/nodatime,nodatime/nodatime,zaccharles/nodatime,malcolmr/nodatime,zaccharles/nodatime