ldb: Version 1.1.30

ldb: Version 1.1.30

* let ldbdump parse the -i option
* don't allow the reveal_internals control for ldbedit
* only allow --show-binary for ldbsearch
* don't let ldbsearch create non-existing files
* fix ldb_tdb search inconsistencies
* add cmocka based tests
* provide an interface for improved indexing for callers
  like Samba, which will allow much better performance.
* Makes ldb access to tdb:// databases use a private event context
  rather than the global event context passed in by the caller.
  This is because running other operations while locks are held
  or a search is being conducted is not safe.

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>