By Jenni CarlsonColumnistjcarlson@oklahoman.comSTILLWATER — Boone Pickens worried about making the largest donation in the history of college athletics. Not because it would remove $165 million from his bank account. Not because he didn’t think OSU would put the money to good use. No, he was concerned back in 2005 because he thought a gift that size might scuttle donations and discourage giving at OSU.