chucknology

Results 3 issues of chucknology

**Reasons for making this change:** Collaborators on platforms other than macOS who edit a repository's gitignore break this ignore rule on macOS.

The SFIZZ_RELEASE_ASSERTS option was ignored and always in effect.

Android threads are Linux threads which differ from the POSIX standard. Calling pthread_setschedparam does not produce the intended effect on Android.