Arvados

Review @ 70dd308

Eliminated ioutil.ReadAll, which was naively allocating buffers 2x as large as necessary.

• Rewrote main.PutBlockHandler to allocate a buffer of exactly req.ContentLength bytes, and fill it with io.ReadFull.
• UnixVolume.Read now uses ioutil.ReadFile to read the contents of a block file (which it should have been doing in the first place)