more on octavation lines

[Werner LEMBERG]

. Octavation lines must have a minimum distance from the staff lines;
  I suggest to use 1.2 times the distance between two lines in a
  staff.

. Another problem is that currently we get the following for
  octavation lines broken across systems:


   8------------------------

   -------------------------

   ---------------|


. Instead we should have this:

   8------------------------

   8------------------------

   8--------------|


. The final `delimiter' (the small vertical bar) must have a greater
  horizontal offset.  I suggest to move it one notehead width to the
  right.


     Werner