[kuroneko] translateLCD: use source address directly
[kuroneko] fixed typo
[kuroneko] make sure all lines are displayed

- clear code (for unused scanlines) was overwriting last active line
[kuroneko] mark initial screen as transparent (shows up red)

- just to be aware were one has/n't drawn anything
Merge pull request #13 from konimaru/master

minor efficency updates