log the right function names

servers/slapd/back-bdb/add.c

servers/slapd/back-bdb/bind.c

servers/slapd/back-bdb/ctxcsn.c

servers/slapd/back-bdb/delete.c

servers/slapd/back-bdb/init.c

servers/slapd/back-bdb/modify.c

servers/slapd/back-bdb/modrdn.c

servers/slapd/back-bdb/operational.c

servers/slapd/back-bdb/proto-bdb.h

servers/slapd/back-bdb/referral.c

servers/slapd/back-bdb/search.c

servers/slapd/back-bdb/tools.c