Fix faling test_msvc_toolset_version test
Fix faling test_msvc_toolset_version test

VCToolsVersion is not always set, and MS docs  recommend getting the
info from a file

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