Misc control cleanups (client only)

-llber is available for -llunicode.  Add -llber to ucgendat
(to pick up snprintf).

try_read1msg. Blind fix, problem was not duplicated/tested.

to 2.0.1 as to the location to the copy.

According to read(2)/write(2) EAGAIN is the only one we're interested in.
Fixes HP-UX 11.
http://www.openldap.org/lists/openldap-software/200105/msg00564.html

Linux on Alpha problems

Patch to allow referrals to be read on synchronous non-search operations.
Treat referrals the same way as MatchDN or ErrorString values.
Store them in the ld structure and provide an option for ldap_get_option
to retrieve them

support no controls.

Fixes the SEGVs from stack overrun, but slapd tends to get hung in select.

Should eliminate individual checks for pthread_yield, sched_yield,
and pthread_detach, but they're left in for now as a redundant check.

Based, in part, from ITS#1502 submission from John Morrissey.

Copyright 2001, John Morrissey (jwm at horde dot net), All rights reserved.
This is free software; you can redistribute and use it under the same terms
as OpenLDAP itself.

if needed. Same check for snprintf.