tdb2: add TDB_RDONLY flag, allow setting/unsetting it.
[ccan] / junkcode / dongre.avinash@gmail.com-clibutils /
drwxr-xr-x   ..
drwxr-xr-x - inc
drwxr-xr-x - src
drwxr-xr-x - test
drwxr-xr-x - win