fix unstable stats test; the open_os_files counter needs a separate test
fix unstable stats test; the open_os_files counter needs a separate test

git-svn-id: cddd53339f8fd45d5e26e8b408ccee250f6290a7@757744 13f79535-47bb-0310-9956-ffa450edef68

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