Increased UI display speed. LogFlasher, LogDisplay, HotkeysDisplay,...

Increased UI display speed. LogFlasher, LogDisplay, HotkeysDisplay, ActorsSeenDisplay, Tooltip and PlayerDisplay classes have changed and are now easier (and faster) to use. Converting is easy:
 * In your Game:display() change lines like self.log:display():toScreen(self.display_x, self.display_y)
 * to simply: self.log:toScreen()
 * To convert your own PlayerDisplay have a look at ToME's one, but basically you just need to create a texture with :glTexture() and then update it at the end of yoru display() and add a new toScreen() method


git-svn-id: http://svn.net-core.org/repos/t-engine4@1174 51575b47-30f0-44d4-a5cc-537603b46e54