Update erltrek.hrl

* Add ?INQUADQC/1 and ?INSECTSC/1
Update erltrek_setup.erl

* setup_galaxy_sector/9: include inhabited system in the number of stars
Update erltrek_scan.erl

* Add lrscan/5 and the internal functions quadstr/5 and lrscan_lines/6
Update erltrek_event.erl

* Add lrscan test code

* Comment out srscan test code