score: Add and use _Thread_Dispatch_direct()

This function is useful for operations which synchronously block, e.g.
self restart, self deletion, yield, sleep.  It helps to detect if these
operations are called in the wrong context.  Since the thread dispatch
necessary indicator is not used, this is more robust in some SMP
situations.

Update #2751.

cpukit/sapi/src/interrtext.c

@@ -56,7 +56,8 @@ static const char *const internal_error_text[] = {
   "INTERNAL_ERROR_RTEMS_INIT_TASK_ENTRY_IS_NULL",
   "INTERNAL_ERROR_POSIX_INIT_THREAD_ENTRY_IS_NULL",
   "INTERNAL_ERROR_THREAD_QUEUE_DEADLOCK",
-  "INTERNAL_ERROR_THREAD_QUEUE_ENQUEUE_STICKY_FROM_BAD_STATE"
+  "INTERNAL_ERROR_THREAD_QUEUE_ENQUEUE_STICKY_FROM_BAD_STATE",
+  "INTERNAL_ERROR_BAD_THREAD_DISPATCH_DISABLE_LEVEL"
 };
 
 const char *rtems_internal_error_text( rtems_fatal_code error )