If ar is unrecognized, try gar for GNU ar
If ar is unrecognized, try gar for GNU ar

Needed on Solaris, where native ar doesn't recognize all the flags
that meson uses, but GNU ar does.

mesonbuild/meson,mesonbuild/meson,mesonbuild/meson,jpakkane/meson,becm/meson,becm/meson,becm/meson,becm/meson,becm/meson,pexip/meson,jpakkane/meson,QuLogic/meson,mesonbuild/meson,jpakkane/meson,becm/meson,QuLogic/meson,mesonbuild/meson,becm/meson,jpakkane/meson,QuLogic/meson,becm/meson,pexip/meson,pexip/meson,jpakkane/meson,QuLogic/meson,mesonbuild/meson,becm/meson,jpakkane/meson,jpakkane/meson,mesonbuild/meson,pexip/meson,pexip/meson,QuLogic/meson,pexip/meson,pexip/meson,jpakkane/meson,mesonbuild/meson,QuLogic/meson,mesonbuild/meson,pexip/meson,QuLogic/meson,jpakkane/meson,QuLogic/meson,pexip/meson,mesonbuild/meson,QuLogic/meson,becm/meson,pexip/meson