tdb: enforce hashing, via example hash in old rwlocks entry in header.
[ccan] / ccan / likely /
drwxr-xr-x   ..
lrwxrwxrwx 23 LICENCE -> ../../licences/LGPL-2.1
-rw-r--r-- 1035 _info
-rw-r--r-- 3190 likely.c
-rw-r--r-- 3633 likely.h
drwxr-xr-x - test