Update iovec dependency (#179)

Update to match master version of IoVec (0.2.0?), using
IoVec/IoVecMut instead of &IoVec and &mut IoVec.

src/buf/buf.rs

@@ -113,7 +113,7 @@ pub trait Buf {
     /// with `dst` being a zero length slice.
     ///
     /// [`writev`]: http://man7.org/linux/man-pages/man2/readv.2.html
-    fn bytes_vec<'a>(&'a self, dst: &mut [&'a IoVec]) -> usize {
+    fn bytes_vec<'a>(&'a self, dst: &mut [IoVec<'a>]) -> usize {
         if dst.is_empty() {
             return 0;
         }
@@ -662,7 +662,7 @@ impl<'a, T: Buf + ?Sized> Buf for &'a mut T {
         (**self).bytes()
     }
 
-    fn bytes_vec<'b>(&'b self, dst: &mut [&'b IoVec]) -> usize {
+    fn bytes_vec<'b>(&'b self, dst: &mut [IoVec<'b>]) -> usize {
         (**self).bytes_vec(dst)
     }
 
@@ -680,7 +680,7 @@ impl<T: Buf + ?Sized> Buf for Box<T> {
         (**self).bytes()
     }
 
-    fn bytes_vec<'b>(&'b self, dst: &mut [&'b IoVec]) -> usize {
+    fn bytes_vec<'b>(&'b self, dst: &mut [IoVec<'b>]) -> usize {
         (**self).bytes_vec(dst)
     }
 

src/buf/buf_mut.rs

@@ -1,6 +1,6 @@
 use super::{IntoBuf, Writer};
 use byteorder::ByteOrder;
-use iovec::IoVec;
+use iovec::IoVecMut;
 
 use std::{cmp, io, ptr, usize};
 
@@ -188,7 +188,7 @@ pub trait BufMut {
     /// with `dst` being a zero length slice.
     ///
     /// [`readv`]: http://man7.org/linux/man-pages/man2/readv.2.html
-    unsafe fn bytes_vec_mut<'a>(&'a mut self, dst: &mut [&'a mut IoVec]) -> usize {
+    unsafe fn bytes_vec_mut<'a>(&'a mut self, dst: &mut [IoVecMut<'a>]) -> usize {
         if dst.is_empty() {
             return 0;
         }
@@ -645,7 +645,7 @@ impl<'a, T: BufMut + ?Sized> BufMut for &'a mut T {
         (**self).bytes_mut()
     }
 
-    unsafe fn bytes_vec_mut<'b>(&'b mut self, dst: &mut [&'b mut IoVec]) -> usize {
+    unsafe fn bytes_vec_mut<'b>(&'b mut self, dst: &mut [IoVecMut<'b>]) -> usize {
         (**self).bytes_vec_mut(dst)
     }
 
@@ -663,7 +663,7 @@ impl<T: BufMut + ?Sized> BufMut for Box<T> {
         (**self).bytes_mut()
     }
 
-    unsafe fn bytes_vec_mut<'b>(&'b mut self, dst: &mut [&'b mut IoVec]) -> usize {
+    unsafe fn bytes_vec_mut<'b>(&'b mut self, dst: &mut [IoVecMut<'b>]) -> usize {
         (**self).bytes_vec_mut(dst)
     }
 

src/buf/chain.rs

@@ -1,5 +1,5 @@
 use {Buf, BufMut};
-use iovec::IoVec;
+use iovec::{IoVec, IoVecMut};
 
 /// A `Chain` sequences two buffers.
 ///
@@ -177,7 +177,7 @@ impl<T, U> Buf for Chain<T, U>
         self.b.advance(cnt);
     }
 
-    fn bytes_vec<'a>(&'a self, dst: &mut [&'a IoVec]) -> usize {
+    fn bytes_vec<'a>(&'a self, dst: &mut [IoVec<'a>]) -> usize {
         let mut n = self.a.bytes_vec(dst);
         n += self.b.bytes_vec(&mut dst[n..]);
         n
@@ -218,7 +218,7 @@ impl<T, U> BufMut for Chain<T, U>
         self.b.advance_mut(cnt);
     }
 
-    unsafe fn bytes_vec_mut<'a>(&'a mut self, dst: &mut [&'a mut IoVec]) -> usize {
+    unsafe fn bytes_vec_mut<'a>(&'a mut self, dst: &mut [IoVecMut<'a>]) -> usize {
         let mut n = self.a.bytes_vec_mut(dst);
         n += self.b.bytes_vec_mut(&mut dst[n..]);
         n