Patch: issue #659

[Marc Hohl]

Hello all,

I've just posted a patch for the alternate segno sign.
To use the new symbol stored at scripts.varsegno, I have
adapted the arguments for the \bar command.

To start a sengo part, you can use
\bar ".§" or \bar "§"
at the end of the segno part, use \bar "§.".
The difference between ".§" and "§." lies in
the behavior at line breaks.

There is one problem I didn't manage to solve:
I had to shrink the width of the character to 0 to place it
between the double bar lines; this works but has the drawback
that notes are too close to the segno bar. How can I solve this?

Thanks,

Marc

http://codereview.appspot.com/181144