Added Entity:setMoveAnim(oldx, oldy, speed) method to make entities move...

Added Entity:setMoveAnim(oldx, oldy, speed) method to make entities move around the map with smooth movements. This is not used by default, modules can choose to use it or not


git-svn-id: http://svn.net-core.org/repos/t-engine4@2204 51575b47-30f0-44d4-a5cc-537603b46e54