Log Message:
Update couchdb to 1.2.1.

Changes in 1.2.1:
* Fixed CVE-2012-5641: Apache CouchDB Information disclosure via unescaped
  backslashes in URLs on Windows
* Fixed CVE-2012-5649: Apache CouchDB JSONP arbitrary code execution with Adobe
  Flash
* Fixed CVE-2012-5650: Apache CouchDB DOM based Cross-Site Scripting via Futon
  UI
* Fix various bugs in the URL rewriter when recursion is involved.
* Fix couchdb start script.
* Futon: Disable buttons that aren't available for the logged-in user.
* Fix potential replication timeouts.
* Change use of signals to avoid broken view groups.