bpo-37798: Add C fastpath for statistics.NormalDist.inv_cdf() (GH-15266) (GH-15441)

(cherry picked from commit 0a18ee4be7ba215f414bef04598e0849504f9f1e)

Co-authored-by: Dong-hee Na <donghee.na92@gmail.com>
9 files changed