message: Improved make test to receive args
diff: +ifeq (test, $(firstword $(MAKECMDGOALS)))
  + runargs := $(wordlist 2, $(words $(MAKECMDGOALS)), $(MAKECMDGOALS))
  + $(eval $(runargs):;@true)
  +endif
  +
  .PHONY: spectests clean build install
  # This will re-generate the Rust test files based on spectests/*.wast
  @@ -14,7 +19,7 @@ install:
  cargo install --path .
  test:
  - cargo test -- --test-threads=1
  + cargo test -- --test-threads=1 $(runargs)
  release:
  # If you are in OS-X, you will need mingw-w64 for cross compiling to windows
  