Database-level security.
Database-level security.

This patch builds on the DB-admins feature to store lists of database admin and reader names and roles, as well as a security object which can be used for configuration in validation functions.

git-svn-id: c1f8a8ec0b3bb2e99ab3413722f81f687760e79c@905436 13f79535-47bb-0310-9956-ffa450edef68

apache/couchdb-jquery-couch,apache/couchdb-jquery-couch