add changes.js to install target
add changes.js to install target

git-svn-id: cddd53339f8fd45d5e26e8b408ccee250f6290a7@772978 13f79535-47bb-0310-9956-ffa450edef68

mhammond/couchdb,mhammond/couchdb,mhammond/couchdb,mhammond/couchdb,mhammond/couchdb