mesonmain: be DRY
mesonmain: be DRY

We have all the information needed to calculate the builtin arguments in
the coredata module already, don't duplicate that in the mesonmain
module as well.

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