Ticket #47834 - Tombstone_to_glue: if parents are also converted to glue, the target entry's DN must be adjusted.
    
    Description: commit 708a56b8d524131362e2d71b7fbc2eb257075e14 for
    Ticket #47834 ingroduced the flood of "Connection is NULL and hence
    cannot access SLAPI_CONN_ID" in the error log.  This patch changes
    the log level of the message to LDAP_DEBUG_TRACE to suppress it.
    (cherry picked from commit cfb2cacfb94e511068a7c9ceed4e9ae1dfdfd45a)