EmuELEC's ports system has one emulator, `ports`, the dispatch to a
script ports.yaml generates. The scraper now reads each port's engine
(the libretro core handed to emuelecRunEmu.sh with -C, else port_exe),
so devilutionx, sonic2013, soniccd, sonic-mania, reminiscence and
rigelengine are examined. Standalone emulators keep the spelling the
launch code dispatches on instead of invented lowercase forms, and
media players and runtimes go to the overrides' remove_cores.
Each system of the AmberELEC, EmuELEC and KNULLI lists now carries the
cores its ES list offers it, in menu order, under `cores:`.
Abdessamad Derraz
9648b9fc3b