[Sheepdog] Google Summer of Code 2012

[MORITA Kazutaka]

Hi all,

Yuan suggested to me that our Sheepdog community should participate in
Google Summer of Code (http://code.google.com/intl/ja/soc/).

To apply to GSoC, we need to create an ideas list that we'd like
students work on.  Here is a copy from Sheepdog TODO items.

 - create sheepdog client library
 - support variable object size
 - add writeback support
 - get differences between VDIs for efficient backup
 - support hierarchical zone

Any other ideas?

Thanks,

Kazutaka