Add update script for tests
Add update script for tests

Changes in the IR are common, and some of them may
fail all the test, so a scrip that update the tests
with the current output of cc1 is a good thing.

8l/scc,k0gaMSX/scc,8l/scc,k0gaMSX/scc,k0gaMSX/scc,k0gaMSX/kcc,8l/scc,k0gaMSX/kcc