Send #doc{} instead of #group{} to remote nodes
Send #doc{} instead of #group{} to remote nodes

I realized after the fact that I'm still doing the evil thing of sending
records between nodes, so in a later two-phase upgrade we should fix
that.  Nevertheless, the RPC workers are now configured to match on the
doc record, and this gets us to CommonJS faster.

BugzID: 13487

fkaempfer/couchdb,fkaempfer/couchdb,fkaempfer/couchdb,fkaempfer/couchdb,fkaempfer/couchdb,fkaempfer/couchdb