Update afl to rev 47 via SR 779153
https://build.opensuse.org/request/show/779153
by user msmeissn + dimstar_suse
- updated to 2.61c
- use -march=native if available
- most tools now check for mistyped environment variables
- gcc 10 is now supported
- the memory safety checks are now disabled for a little more speed during
fuzzing (only affe