Added additional debug output for arc creation
Added additional debug output for arc creation

To help diagnose issues with small segments, new debug data was added to
tpCreateBlendArc. This is useful to track down exactly which segments
were being shrunk too much. Short segments are causing issues with
overshoot, since a very short segment can be skipped entirely if the
velocity is too high.

bmwiedemann/linuxcnc-mirror,bmwiedemann/linuxcnc-mirror,bmwiedemann/linuxcnc-mirror,ikcalB/linuxcnc-mirror,ikcalB/linuxcnc-mirror,ikcalB/linuxcnc-mirror,ikcalB/linuxcnc-mirror,ikcalB/linuxcnc-mirror,ikcalB/linuxcnc-mirror,bmwiedemann/linuxcnc-mirror,ikcalB/linuxcnc-mirror,bmwiedemann/linuxcnc-mirror,bmwiedemann/linuxcnc-mirror,bmwiedemann/linuxcnc-mirror