ldb: Release ldb 1.3.0

ldb: Release ldb 1.3.0

* GUID Index support.

  NOTE: When activated by setting @IDXGUID in the @INDEXLIST dn, all
  entries in the DB are re-keyed in a way that is NOT visible to
  ldb 1.2.2 and earlier.  To re-key back to the previous format, remove
  the @IDXGUID attribute from @INDEXLIST using ldb 1.2.2 or later.

  (ldb 1.2.2 can re-key, but not otherwise read, the new DB format).

* Give LDB_ERR_CONSTRAINT_VIOLATION, not LDB_ERR_ENTRY_ALREADY_EXISTS
  when a duplicate value is detected in a unique index

* Print status information during a > 10,000 entry re-index
  (as this can be slow)

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Sat Sep 23 01:24:19 CEST 2017 on sn-devel-144