Optimization of LayerRegion::slices_to_fill_surfaces_clipped() Added some run time tracing through boost::log.
Optimization of LayerRegion::slices_to_fill_surfaces_clipped()
Added some run time tracing through boost::log.

prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r