auto merge of #11598 : alexcrichton/rust/io-export, r=brson

* Reexport io::mem and io::buffered structs directly under io, make mem/buffered
  private modules
* Remove with_mem_writer
* Remove DEFAULT_CAPACITY and use DEFAULT_BUF_SIZE (in io::buffered)

cc #11119

1 files changed, 2 insertions, 2 deletions

diff --git a/src/libstd/fmt/mod.rs b/src/libstd/fmt/mod.rs
index 8de406f306f..a075010bfb2 100644
--- a/src/libstd/fmt/mod.rs
+++ b/src/libstd/fmt/mod.rs
@@ -242,7 +242,7 @@ actually invoking the `write` function defined in this module. Example usage is:
 ```rust
 use std::io;
 
-let mut w = io::mem::MemWriter::new();
+let mut w = io::MemWriter::new();
 write!(&mut w as &mut io::Writer, "Hello {}!", "world");
 ```
 
@@ -470,7 +470,7 @@ use prelude::*;
 
 use cast;
 use char::Char;
-use io::mem::MemWriter;
+use io::MemWriter;
 use io;
 use str;
 use repr;