Football locker room remodels usually come out of television money and alumni donations, not university general funds.
However, at my campus they have sushi bars in the dorm cafeterias, and that DOES come out of the student's meal plan payments.
I'd venture a guess that LSU's Lazy River was paid for out of housing revenue, not general funds, and as such couldn't have been used for library renovations in any case.
Jeezzz..I remember when I went to school in the mid-80s it was mystery meat Mondays and I went to an expensive private school.