big speedups for scrolling and drawing big textblock (once they are

big speedups for scrolling and drawing big textblock (once they are
formatted) as it will skip (relatively quickly0 draws outside the canvas
viewport. this could become quicker with a fask line-skip table to specific
coordinates, but for now, it's a
LOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOT
better. like going from 1fps to 60fps+

git-svn-id: http://svn.enlightenment.org/svn/e/trunk/evas@45836 7cbeb6ba-43b4-40fd-8cce-4c39aea84d33