ceph/ceph — pull request #516 by dachary (2013-08-20 15:34:09+00:00)
Title: erasure code : plugin, interface and glossary updates

* replace the erasure code plugin abstract interface with a doxygen link
that will be populated when the header shows in master
* update the plugin documentation to reflect the current draft implementation
* fix broken link to PGBackend-h
* add a glossary to define chunk, stripe, shard and strip with a drawing

http://tracker.ceph.com/issues/4929 refs #4929

Signed-off-by: Loic Dachary