Fix #252: Add script to run ansi-tests
First, rename bin/run-tests.sh to bin/run-unit-tests.sh. Second, add a new script bin/run-ansi-tests.sh to clone ansi-tests and run the tests with the specified lisp.
First, rename bin/run-tests.sh to bin/run-unit-tests.sh. Second, add a new script bin/run-ansi-tests.sh to clone ansi-tests and run the tests with the specified lisp.