Properly detect `--test` command-line argument
Properly detect `--test` command-line argument

Do not prematurely parse anything which beings with `--test`
to run doctest. This allows other commands to be run, such as
`--test-gdscript` or other custom arguments.

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