8616 ld has trouble parsing -z options specified with -Wl
Reviewed by: Toomas Soome <tsoome@me.com>
Reviewed by: Yuri Pankov <yuripv@gmx.com>

*** 25,34 ****
--- 25,35 ----
   *
   * Copyright (c) 1989, 2010, Oracle and/or its affiliates. All rights reserved.
   */
  /*
   * Copyright (c) 2012, Joyent, Inc.  All rights reserved.
+  * Copyright 2017 RackTop Systems.
   */
  
  /*
   * Publicly available flags are defined in ld(1).   The following flags are
   * private, and may be removed at any time.
*** 1235,1244 ****
--- 1236,1253 ----
  
                  case 'z':
                          DBG_CALL(Dbg_args_option(ofl->ofl_lml, ndx, c, optarg));
  
                          /*
+                          * Skip comma that might be present between -z and its
+                          * argument (e.g. if -Wl,-z,assert-deflib was passed).
+                          */
+                         if (strncmp(optarg, MSG_ORIG(MSG_STR_COMMA),
+                              MSG_STR_COMMA_SIZE) == 0)
+                                 optarg++;
+ 
+                         /*
                           * For specific help, print our usage message and exit
                           * immediately to ensure a 0 return code.
                           */
                          if (strncmp(optarg, MSG_ORIG(MSG_ARG_HELP),
                              MSG_ARG_HELP_SIZE) == 0) {