* lily/tie-formatting-problem.cc (set_chord_outline): put dots

* lily/tie-formatting-problem.cc (set_chord_outline): put dots
in outline too.
(generate_configuration): for small ties, also look for collisions
at Y + DIR*h + DELTA_Y.
(get_variations): consider variation for dot positions too.

* lily/side-position-interface.cc (aligned_side): take abs for
quantized rounded position. Fixes tenuto below staff.