polycombine: Doxygen tags added and changes in whitespace.
polycombine: Doxygen tags added and changes in whitespace.

Signed-off-by: bert <81e7dca9b546c0177fb33af538cd5c6a40cacd96@xs4all.nl>

bert/pcb-plugins,bert/pcb-plugins,bert/pcb-plugins,bert/pcb-plugins,bert/pcb-plugins