Dread, Dreadmaster, Banshee, Ruin Banshee now have permanent *stealth*. This means you can see them without see invisible but it's not perfect you can loose them sometimes


git-svn-id: http://svn.net-core.org/repos/t-engine4@4283 51575b47-30f0-44d4-a5cc-537603b46e54