NPTL: Conditionalize more uses of SIGCANCEL and SIGSETXID.

nptl/pthread_create.c

@@ -263,6 +263,7 @@ start_thread (void *arg)
     }
 #endif
 
+#ifdef SIGCANCEL
   /* If the parent was running cancellation handlers while creating
      the thread the new thread inherited the signal mask.  Reset the
      cancellation signal mask.  */
@@ -275,6 +276,7 @@ start_thread (void *arg)
       (void) INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_UNBLOCK, &mask,
 			       NULL, _NSIG / 8);
     }
+#endif
 
   /* This is where the try/finally block should be created.  For
      compilers without that support we do use setjmp.  */