cautionary-style = smaller and grace notes

[Erik Sandberg]

When cautionary-style is set to 'smaller, it instead makes the accidentals 
BIGGER for grace notes. I guess the accidental size is set relative the 
normal size of normal notes, not to the normal size of itself.

Example:

\score {
 \notes \transpose c'' \context Voice {
   \property Staff.Accidental \override #'cautionary-style = #'parentheses
   \grace cis?8 % Gets Medium, should be Smallest
   cis?8        % Medium
   \grace cis!8 % Small
   cis!8        % Large
  }
}

Erik