[Bug 8614] Test suite fails when using --with-threads=no

https://bugs.openldap.org/show_bug.cgi?id=8614

--- Comment #7 from Quanah Gibson-Mount quanah@openldap.org --- Need to check the various man pages etc about threads. For example, slapd-ldap(5) has:

Note: When looping back to the same instance of slapd(8), each connection requires a new thread; as a consequence, slapd(8) must be compiled with thread support, and the threads parameter may need some tuning; in those cases, one may consider using slapd-relay(5) instead, which performs the relayed operation internally and thus reuses the same connection.

slapd always will have thread support in 2.5+, so the wording needs adjustment.