Add {leading,trailing}_ones to primitive int types
Add {leading,trailing}_ones to primitive int types

graydon/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust,aidancully/rust,aidancully/rust,graydon/rust,aidancully/rust,aidancully/rust,graydon/rust