unittest: convert garray_spec.moon to lua
unittest: convert helpers.moon to lua
unittest: convert env_spec.moon to lua
unittest: convert fs_spec.moon to lua
unittest: convert path_spec.moon to lua
unittest: convert users_spec.moon to lua
unittest: convert preprocess.moon to lua
unittest: convert set.moon to lua
unittest: Remove remaining moonscript references
build: Remove moonscript as a third-party build dependency
unittest: Move FileInfo tests one level up
Merge #1128 'Drop moonscript'