Use GCC 9 in travis.
Use GCC 9 in travis.

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