New method font:draw(string, max_size, r, g, b) that is the same as TString:makeTextureLines() & countLines() combined, but it works on plain strings and it is *fast*
Log & Flying texts now have a small shadow to outline the texts


git-svn-id: http://svn.net-core.org/repos/t-engine4@3319 51575b47-30f0-44d4-a5cc-537603b46e54