Version 707 was commited by steve on 2008-11-16 12:29:22 +0000 (Sun, 16 Nov 2008) Fix clipping bug where a line runs parallel to the side we are clipping against. Also changed many double values to int's as we only work in ints for the coordinates anyway. Changed some terminology to better match the web page description of the algorithm. (Bug reported by beej71)