Add support for linking using LLD on X11
Add support for linking using LLD on X11

LLD is often faster than GNU ld and gold, resulting in a better
development experience.

This closes #15364.

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