tests/llvm: Allow test to run with static-only llvm
tests/llvm: Allow test to run with static-only llvm

Like on windows, where shared llvm isn't support.

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