mtest: Handle subtest results as a dict
mtest: Handle subtest results as a dict

for non tap tests we want to associate names with the tests, to that end
store them as a dict. For TAP tests, we'll store the "name" as an
integer string that coresponds to the order that the tests were run in.

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