Distinct long-link table growth log message

Distinct long-link table growth log message

* finalize.c (GC_register_disappearing_link_inner): Add tbl_log_name
argument and pass it to GC_COND_LOG_PRINTF (instead of "dl" name).
* finalize.c (GC_general_register_disappearing_link,
GC_register_long_link): Pass corresponding link hashtable short name
("dl" or "long dl") to GC_register_disappearing_link_inner.