See invisible & See stealth now works the the old "checkHit", because stealth...

See invisible & See stealth now works the the old "checkHit", because stealth & invis are not 100-scaled


git-svn-id: http://svn.net-core.org/repos/t-engine4@4715 51575b47-30f0-44d4-a5cc-537603b46e54