Re: Issue 5621: Improve rehearsal mark position at beginning of staff (issue 547340043 by nine.fierce.ballads@gmail.com)

[nine . fierce . ballads]

let MAKE_SCHEME_CALLBACK... handle overloading

This change lets me use both of these functions in
Break_alignable_interface:

    SCM find_parent (SCM);
    Grob* find_parent (Grob*);

An alternative is to mangle one of the names manually, e.g.
internal_find_parent.

clean up names, division between Scheme/C++

Thanks for the feedback on naming.  Are the new callback names better?


https://codereview.appspot.com/547340043/