fix getting correct mingw-w64 version
fix getting correct mingw-w64 version

When checking mingw-w64 version, at least on debian, the regex being used returned 86 because the name of the binary in debian starts with x86_64-w64 so we use the dumpversion option that gcc has. This fixes not compiling because gcc versions < 7 don't have some checks like shadow-local

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