implemented class Linesegments based on Line.h
implemented class Linesegments based on Line.h

BerlinUnited/NaoTH,BerlinUnited/NaoTH,BerlinUnited/NaoTH,BerlinUnited/NaoTH,BerlinUnited/NaoTH,BerlinUnited/NaoTH,BerlinUnited/NaoTH