Revert "regdb: use dbwrap->fetch() instead of fetch_locked() for readonly access"
This reverts commit
4e2be189e97f653b75bd88135a631ce0f42db267.
Metze, this broke the registry (reg_api layer), but I don't yet know
exactly how and why. By the way, the locks there had the purpose of
fetching the seqnum that really matches the data.
This needs some more thought / debugging. But I wanted to have
the tree in a working state again.
Michael
(This used to be commit
5c28c74aa06a82559f498373b3d6e9892d5c2cbe)