Register PPD and release_handler at the same time.

Fix that process will remain even if signal is received between PPD
registration and release_handler registration.

Refs: #1201
Fujitsu: POSTK_DEBUG_TEMP_FIX_64
Change-Id: I571781963578df8cedb327f19298f595cfb137a3

executer/user/mcexec.c

@@ -3807,7 +3807,6 @@ gettid_out:
 			    /* Child process */
 			    case 0: {
 				int ret = 1;
-				struct newprocess_desc npdesc;
 				struct rpgtable_desc rpt;
 
 				ischild = 1;
@@ -3879,9 +3878,6 @@ fork_child_sync_pipe:
 				fork_sync_top = NULL;
 				pthread_mutex_init(&fork_sync_mutex, NULL);
 
-				npdesc.pid = getpid();
-				ioctl(fd, MCEXEC_UP_NEW_PROCESS, &npdesc);
-
 				/* TODO: does the forked thread run in a pthread context? */
 				while (getppid() != 1 &&
 				       fs->success == 0) {