Test Free42 on M1-based Mac

[Thomas Okken]

I just got confirmation that FPTEST returns the expected results on the M1. So no need for anyone else to run this test anymore.

(Specifically, the Intel library's test suite is spitting out some errors, all caused by a set of conversion functions that are not used by Free42, neither directly nor indirectly. Roughly the same set of functions is causing errors in the test suite in the other ARM builds as well, i.e. Android and iOS; the set of functions varies a bit between platforms, but none of them are used by Free42.)