(ConfigReply) for the error messages.

bconfig.c and back-sql.

which should help in debugging schema development for back-config.
The check essentially verifies, when a duplicate attributeType is found,
that the new attributeType definition is an exact duplicate of the
definition already present in the schema.

objectclass definition (ITS#3205)

Fix DIT rules to allow extensibleObject in AUX
unifdef -DSLAP_EXTENDED_SCHEMA

applied (and disabled via schemacheck off).  Removed add-rdn-values flag.

Clean up syntax error reporting.