edited failure recovery document to point to Renaming a Node document when a recovered cluster requires renaming of nodes.
added renaming nodes from backup in the renaming nodes document
Changes to renaming nodes from cluster backup reflecting fixes to reip in 2.0
changes to renaming nodes for Riak 2.0
avoid merge nightmare
Merge pull request #981 from basho/jc/issue976

Ready: Changes to Failure Recovery, Renaming to avoid using reip