[bug] accent touches slur

[Graham Percival]

I hope I didn't cause this with my patch to scm/script.scm  :(
The slur goes right across the accent; I think the accent should get 
moved
down.

% accent touches slur
\version "2.3.16"
\bookpaper {raggedright = ##t }
{
  f'8->( b) b b
}