Do not rely on the existence of `config.py` while detecting modules
Do not rely on the existence of `config.py` while detecting modules

The existence of `SCsub` is checked instead. This file is required for
all modules, and prevents the build system to leave modules without
`config.py` undetected, leading to silently ignoring the module during
compilation.

sanikoyes/godot,Zylann/godot,firefly2442/godot,pkowal1982/godot,DmitriySalnikov/godot,vnen/godot,Zylann/godot,Shockblast/godot,josempans/godot,Valentactive/godot,Zylann/godot,BastiaanOlij/godot,Valentactive/godot,honix/godot,firefly2442/godot,honix/godot,Faless/godot,MarianoGnu/godot,sanikoyes/godot,DmitriySalnikov/godot,sanikoyes/godot,firefly2442/godot,godotengine/godot,DmitriySalnikov/godot,BastiaanOlij/godot,pkowal1982/godot,MarianoGnu/godot,pkowal1982/godot,akien-mga/godot,sanikoyes/godot,Shockblast/godot,Paulloz/godot,Faless/godot,guilhermefelipecgs/godot,godotengine/godot,MarianoGnu/godot,Faless/godot,vnen/godot,sanikoyes/godot,akien-mga/godot,ZuBsPaCe/godot,guilhermefelipecgs/godot,sanikoyes/godot,pkowal1982/godot,godotengine/godot,DmitriySalnikov/godot,ZuBsPaCe/godot,guilhermefelipecgs/godot,guilhermefelipecgs/godot,akien-mga/godot,Paulloz/godot,godotengine/godot,vnen/godot,josempans/godot,Shockblast/godot,vnen/godot,Paulloz/godot,Shockblast/godot,ZuBsPaCe/godot,vkbsb/godot,Valentactive/godot,MarianoGnu/godot,BastiaanOlij/godot,vkbsb/godot,BastiaanOlij/godot,Valentactive/godot,vkbsb/godot,honix/godot,Paulloz/godot,guilhermefelipecgs/godot,MarianoGnu/godot,Zylann/godot,Shockblast/godot,Valentactive/godot,DmitriySalnikov/godot,BastiaanOlij/godot,Valentactive/godot,honix/godot,josempans/godot,vkbsb/godot,Paulloz/godot,godotengine/godot,akien-mga/godot,MarianoGnu/godot,vkbsb/godot,Valentactive/godot,vkbsb/godot,firefly2442/godot,pkowal1982/godot,sanikoyes/godot,ZuBsPaCe/godot,DmitriySalnikov/godot,pkowal1982/godot,ZuBsPaCe/godot,vkbsb/godot,godotengine/godot,guilhermefelipecgs/godot,godotengine/godot,godotengine/godot,vnen/godot,akien-mga/godot,MarianoGnu/godot,vnen/godot,Faless/godot,Paulloz/godot,honix/godot,josempans/godot,Shockblast/godot,Valentactive/godot,sanikoyes/godot,Zylann/godot,Faless/godot,josempans/godot,MarianoGnu/godot,Zylann/godot,akien-mga/godot,firefly2442/godot,vnen/godot,akien-mga/godot,Paulloz/godot,vnen/godot,BastiaanOlij/godot,Zylann/godot,ZuBsPaCe/godot,Shockblast/godot,akien-mga/godot,Shockblast/godot,DmitriySalnikov/godot,Faless/godot,pkowal1982/godot,Faless/godot,josempans/godot,vkbsb/godot,BastiaanOlij/godot,Zylann/godot,ZuBsPaCe/godot,josempans/godot,Faless/godot,josempans/godot,firefly2442/godot,BastiaanOlij/godot,ZuBsPaCe/godot,pkowal1982/godot,honix/godot,firefly2442/godot,guilhermefelipecgs/godot,guilhermefelipecgs/godot,firefly2442/godot