Fix xcode backend to run "meson test" instead of the nonexistent meson_test.py.
Fix xcode backend to run "meson test" instead of the nonexistent meson_test.py.

mesonbuild/meson,pexip/meson,jeandet/meson,jeandet/meson,thiblahute/meson,becm/meson,jeandet/meson,thiblahute/meson,pexip/meson,becm/meson,QuLogic/meson,QuLogic/meson,becm/meson,pexip/meson,jpakkane/meson,mesonbuild/meson,jeandet/meson,jpakkane/meson,mesonbuild/meson,pexip/meson,pexip/meson,becm/meson,MathieuDuponchelle/meson,thiblahute/meson,MathieuDuponchelle/meson,jpakkane/meson,QuLogic/meson,mesonbuild/meson,becm/meson,jeandet/meson,jpakkane/meson,jeandet/meson,thiblahute/meson,pexip/meson,jpakkane/meson,becm/meson,jeandet/meson,pexip/meson,mesonbuild/meson,QuLogic/meson,becm/meson,jpakkane/meson,mesonbuild/meson,QuLogic/meson,QuLogic/meson,MathieuDuponchelle/meson,MathieuDuponchelle/meson,QuLogic/meson,thiblahute/meson,MathieuDuponchelle/meson,mesonbuild/meson,mesonbuild/meson,jeandet/meson,jpakkane/meson,jpakkane/meson,pexip/meson,pexip/meson,QuLogic/meson,MathieuDuponchelle/meson,mesonbuild/meson,thiblahute/meson,MathieuDuponchelle/meson,QuLogic/meson,MathieuDuponchelle/meson,thiblahute/meson,MathieuDuponchelle/meson,jpakkane/meson,becm/meson,becm/meson,pexip/meson,jeandet/meson,becm/meson,mesonbuild/meson,thiblahute/meson,thiblahute/meson