LCUP persistent search code drop

include/ldap.h

servers/slapd/Makefile.in

servers/slapd/abandon.c

servers/slapd/back-bdb/Makefile.in

servers/slapd/back-bdb/add.c

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

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/proto-bdb.h

servers/slapd/back-bdb/search.c

servers/slapd/connection.c

servers/slapd/controls.c

servers/slapd/main.c

servers/slapd/proto-slap.h

servers/slapd/search.c

servers/slapd/slap.h

servers/slapd/tools/Makefile.in