About zero component orientation:
http://www.pcblibraries.com/forum/zero-orientation-still-puzzeling-to-me_topic846.html
http://ohm.bu.edu/~pbohn/__Engineering_Reference/pcb_layout/pcbmatrix/Component%20Zero%20Orientations%20for%20CAD%20Libraries.pdf
By the way KiCad nightly builds have an option to output centroid file in CSV format.