Attach and detach from the db.
Simplify the API by not requiring the name to be specfied for add and remove,
and by not requiring the db to be specified for removedefault.
Calls to dns_rbt_findname were failing because stored_data was not initialized
to NULL.
The commit_ok and changed_list were sometimes being accessed without
holding the lock.
Comments in structure.
Do not allow an rdataset to be added to a non-writer version.
Do not allow closeversion() to commit a writer version unless the ref count
is one.
We were not incrementing the version ref count when creating an rdataset
iterator.
what happens at ".". For most origins, they do NOT include themself in
a zone file ... that is, the record for "rc" appears in the $ORIGIN for
".vix.com."
rollback_node() incorrectly required that node->references == 0. We cannot
assume that a node has no references when an update is rolled back. We now
mark any rolled back rdatasets with the RDATASET_ATTR_IGNORE attribute. When
the node eventually has a zero reference count, IGNOREd rdatasets will be
cleaned up. In the meantime, they will be ignored.
point. Specifically, we return a delegation in this case, except if glue is
OK, or if the caller is looking for NXT or KEY records.
SIG records are going to be a special case, so do not deal with them in the
zone find routine.
sometimes did not find the deepest zone cut. E.g. If you look for A records at
"com." then you should get a delegation for "com." and not one for ".".
In the various rdataset find routines, we sometimes attempted to bind the
rdataset even if the rdataset pointer was NULL.
Remove inline from a few functions. Add inline to a few others.
Allow creation of a database with cache semantics.
Allow search rdata type to be specified.
Allow glue to be retrieved.
Make output nicer looking by adding whitespace.
Add incomplete and not-yet-working dbiterator implementation.
Improve node reference count handling.
Opening and closing the current version more than once was breaking
due to incorrect garbage collection.
Some rbtdb values had not been getting initialized.
Improvements to add procedure.
