Re-add `std::os::raw::c_ssize_t`, with more accurate documentation
Re-add `std::os::raw::c_ssize_t`, with more accurate documentation

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