NEX-19665 Several door servers don't properly handle exiting threads
Review by: Gordon Ross <gordon.ross@nexenta.com>
Review by: Evan Layton <evan.layton@nexenta.com>
NEX-2225 Unable to join NexentaStor to 2008 AD
NEX-1638 Updated DC Locator
 Includes work by: matt.barden@nexenta.com, kevin.crowe@nexenta.com
re #13190 rb4312 idmapd error -9961 (No AD servers)

*** 18,28 ****
   *
   * CDDL HEADER END
   */
  /*
   * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
!  * Copyright 2014 Nexenta Systems, Inc.  All rights reserved.
   */
  
  /*
   * Initialization routines
   */
--- 18,28 ----
   *
   * CDDL HEADER END
   */
  /*
   * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
!  * Copyright 2018 Nexenta Systems, Inc.  All rights reserved.
   */
  
  /*
   * Initialization routines
   */
*** 355,364 ****
--- 355,365 ----
          }
  
          pgcfg = &_idmapdstate.cfg->pgcfg;
  
          idmapdlog(LOG_DEBUG, "list_size_limit=%llu", pgcfg->list_size_limit);
+         idmapdlog(LOG_DEBUG, "max_threads=%llu", pgcfg->max_threads);
          idmapdlog(LOG_DEBUG, "default_domain=%s",
              CHECK_NULL(pgcfg->default_domain));
          idmapdlog(LOG_DEBUG, "domain_name=%s", CHECK_NULL(pgcfg->domain_name));
          idmapdlog(LOG_DEBUG, "machine_sid=%s", CHECK_NULL(pgcfg->machine_sid));
          if (pgcfg->domain_controller == NULL ||