Add notes on using afl-fuzz to HACKING.
-rw-r--r-- 1026 .clang-format
-rw-r--r-- 395 .gitignore
-rw-r--r-- 189 .travis.yml
-rw-r--r-- 11358 COPYING
-rw-r--r-- 6989 HACKING.md
-rw-r--r-- 837 README
-rw-r--r-- 1127 RELEASING
-rwxr-xr-x 858 bootstrap.py
-rwxr-xr-x 21049 configure.py
drwxr-xr-x - doc
drwxr-xr-x - misc
drwxr-xr-x - src