Merge maint1.mysql.com:/data/localhome/tsmith/bk/bfx/my50-bfx

into  maint1.mysql.com:/data/localhome/tsmith/bk/bfx/my51-bfx


sql/mysqld.cc:
  SCCS merged
sql/stacktrace.c:
  Manual merge (use local)
sql/stacktrace.h:
  !
  Manual merge (use local)

sql/mysqld.cc

@@ -7592,10 +7592,10 @@ get_one_option(int optid, const struct my_option *opt __attribute__((unused)),
     }
     switch (method-1) {
     case 0: 
-      method_conv= MI_STATS_METHOD_NULLS_EQUAL;
+      method_conv= MI_STATS_METHOD_NULLS_NOT_EQUAL;
       break;
     case 1:
-      method_conv= MI_STATS_METHOD_NULLS_NOT_EQUAL;
+      method_conv= MI_STATS_METHOD_NULLS_EQUAL;
       break;
     case 2:
       method_conv= MI_STATS_METHOD_IGNORE_NULLS;