Remember dynamically set options as started

mysql-test/lib/My/Options.pm:
  Add conversion from --set-variable=name=value to SET GLOBAL name=value

mysql-test/lib/My/Options.pm

@@ -168,9 +168,14 @@ sub toSQL {
   foreach my $option (@options) {
     my ($name, $value)= _split_option($option);
     #print "name: $name\n";
+    #print "value: $value\n";
     if ($name =~ /^O, (.*)/){
       push(@sql, "SET GLOBAL $1=$value");
-    } else {
+    }
+    elsif ($name =~ /^set-variable=(.*)/){
+      push(@sql, "SET GLOBAL $1=$value");
+    }
+    else {
       my $sql_name= $name;
       $sql_name=~ s/-/_/g;
       push(@sql, "SET GLOBAL $sql_name=$value");

mysql-test/mysql-test-run.pl

@@ -2833,16 +2833,14 @@ sub server_need_restart {
       my $query= My::Options::toSQL(@diff_opts);
       mtr_verbose("Attempting dynamic switch '$query'");
       if (run_query($tinfo, $server, $query)){
-	mtr_verbose("Restart: Dynamic switch failed");
-	return 1;
-      }
-      else
-      {
 	mtr_verbose("Restart: running with different options '" .
 		    join(" ", @{$extra_opts}) . "' != '" .
 		    join(" ", @{$server->{'started_opts'}}) . "'" );
 	return 1;
       }
+
+      # Remember the dynamically set options
+      $server->{'started_opts'}= $extra_opts;
     }
   }