Automatically break large buffers into smaller chunks when using read(),

async_read(), write() or async_write().


[SVN r36724]

libs/asio

@@ -1 +1 @@
-Subproject commit 0c536811ff4cd21f00a3a283133260852b139932
+Subproject commit 2212dddb1f799a090e6a04c247c449e8340e8045