Lyric meslima line incorrectly laid out in parts

Ubuntu 14.04, GIT commit: 3f842fb

1) load attached score
2) generate parts
3) view part

Result: melisma line extends backwards

It seems the issue is that the melisma line (the actual Line object) is cloned to the part, but still the clone is still parented to the copy of the lyric in the score. Thus the layout calculations are off.

I find I can fix it in the copy constructor for the Lyric element by simply not cloning the separator list at all. This forces them to be regenerated on first layout. Or, I can re-parent the searators during the copy. Either way works. But I guess there is a chance this is going to be re-implemented (to use SLine) at some point soon anyhow.