sched: clean up sleep_on() APIs

clean up the sleep_on() APIs:

 - do not use fastcall
 - replace fragile macro magic with proper inline functions

Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/include/linux/wait.h b/include/linux/wait.h
index e820d00..0e68628 100644
--- a/include/linux/wait.h
+++ b/include/linux/wait.h
@@ -366,15 +366,15 @@
 
 /*
  * These are the old interfaces to sleep waiting for an event.
- * They are racy.  DO NOT use them, use the wait_event* interfaces above.  
- * We plan to remove these interfaces during 2.7.
+ * They are racy.  DO NOT use them, use the wait_event* interfaces above.
+ * We plan to remove these interfaces.
  */
-extern void FASTCALL(sleep_on(wait_queue_head_t *q));
-extern long FASTCALL(sleep_on_timeout(wait_queue_head_t *q,
-				      signed long timeout));
-extern void FASTCALL(interruptible_sleep_on(wait_queue_head_t *q));
-extern long FASTCALL(interruptible_sleep_on_timeout(wait_queue_head_t *q,
-						    signed long timeout));
+extern void sleep_on(wait_queue_head_t *q);
+extern long sleep_on_timeout(wait_queue_head_t *q,
+				      signed long timeout);
+extern void interruptible_sleep_on(wait_queue_head_t *q);
+extern long interruptible_sleep_on_timeout(wait_queue_head_t *q,
+					   signed long timeout);
 
 /*
  * Waitqueues which are removed from the waitqueue_head at wakeup time