unifdef LDAP_SYNC and LDAP_SYNCREPL

clients/tools/ldapsearch.c

include/ldap.h

libraries/libldap/error.c

servers/slapd/add.c

servers/slapd/back-bdb/add.c

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

servers/slapd/back-bdb/cache.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/passwd.c

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

servers/slapd/back-bdb/search.c

servers/slapd/back-ldbm/add.c

servers/slapd/back-ldbm/back-ldbm.h

servers/slapd/back-ldbm/bind.c

servers/slapd/back-ldbm/delete.c

servers/slapd/back-ldbm/modify.c