Bug #16444 Setting preferred mirror fails - Implemented a simple mirrorExists to help with this
Bug #16444 Setting preferred mirror fails - Implemented a simple mirrorExists to help with this

git-svn-id: 4b064e69dc630d28214c1e1442d27300cccf8e9a@286651 c90b9560-bf6c-de11-be94-00142212c4b1

DQNEO/PEAR_Exception