tests/common/119: Test array args to join_paths()
tests/common/119: Test array args to join_paths()

This wasn't intended, but it works and people are using it. So test it.

jpakkane/meson,fmuellner/meson,trhd/meson,wberrier/meson,QuLogic/meson,aaronp24/meson,jpakkane/meson,wberrier/meson,fmuellner/meson,rhd/meson,MathieuDuponchelle/meson,aaronp24/meson,mesonbuild/meson,pexip/meson,trhd/meson,ernestask/meson,pexip/meson,jpakkane/meson,mesonbuild/meson,ernestask/meson,trhd/meson,MathieuDuponchelle/meson,trhd/meson,pexip/meson,trhd/meson,QuLogic/meson,thiblahute/meson,thiblahute/meson,jpakkane/meson,thiblahute/meson,jeandet/meson,pexip/meson,thiblahute/meson,jpakkane/meson,becm/meson,aaronp24/meson,jeandet/meson,becm/meson,thiblahute/meson,becm/meson,becm/meson,wberrier/meson,MathieuDuponchelle/meson,pexip/meson,becm/meson,fmuellner/meson,ernestask/meson,aaronp24/meson,MathieuDuponchelle/meson,jeandet/meson,trhd/meson,mesonbuild/meson,trhd/meson,wberrier/meson,MathieuDuponchelle/meson,becm/meson,QuLogic/meson,thiblahute/meson,aaronp24/meson,rhd/meson,fmuellner/meson,rhd/meson,MathieuDuponchelle/meson,pexip/meson,fmuellner/meson,rhd/meson,QuLogic/meson,pexip/meson,mesonbuild/meson,becm/meson,jeandet/meson,jpakkane/meson,thiblahute/meson,mesonbuild/meson,aaronp24/meson,trhd/meson,jeandet/meson,ernestask/meson,becm/meson,QuLogic/meson,jpakkane/meson,aaronp24/meson,fmuellner/meson,rhd/meson,mesonbuild/meson,becm/meson,ernestask/meson,wberrier/meson,QuLogic/meson,jeandet/meson,mesonbuild/meson,MathieuDuponchelle/meson,jeandet/meson,becm/meson,wberrier/meson,aaronp24/meson,mesonbuild/meson,MathieuDuponchelle/meson,jeandet/meson,rhd/meson,MathieuDuponchelle/meson,rhd/meson,wberrier/meson,mesonbuild/meson,thiblahute/meson,rhd/meson,fmuellner/meson,thiblahute/meson,aaronp24/meson,fmuellner/meson,pexip/meson,QuLogic/meson,pexip/meson,ernestask/meson,ernestask/meson,mesonbuild/meson,QuLogic/meson,jeandet/meson,pexip/meson,wberrier/meson,QuLogic/meson,jpakkane/meson,trhd/meson,fmuellner/meson,ernestask/meson,jpakkane/meson,ernestask/meson