Clean up warnings

#![allow(non_camel_case_types)]

#![allow(non_camel_case_types, non_uppercase_statics, non_snake_case)]

#![allow(dead_code)]

use libc::{c_void, c_int, c_char, c_ulong, c_long, c_uint, c_uchar, size_t};

impl<'a, T: AsStr<'a>> ToStr for Vec<T> {

    fn to_str(&self) -> String {

        self.iter().enumerate().fold(String::new(), |mut acc, (idx, v)| {

            if idx > 0 { acc.push_char(',') };

            if idx > 0 { acc.push(',') };

            acc.push_str(v.as_str());

            acc

        })