[PATCH] sched: cleanup, convert sched.c-internal typedefs to struct

convert:

 - runqueue_t to 'struct rq'
 - prio_array_t to 'struct prio_array'
 - migration_req_t to 'struct migration_req'

I was the one who added these but they are both against the kernel coding
style and also were used inconsistently at places.  So just get rid of them at
once, now that we are flushing the scheduler patch-queue anyway.

Conversion was mostly scripted, the result was reviewed and all secondary
whitespace and style impact (if any) was fixed up by hand.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

include/linux/sched.h

@@ -534,7 +534,6 @@ extern struct user_struct *find_user(uid_t);
 extern struct user_struct root_user;
 #define INIT_USER (&root_user)
 
-typedef struct prio_array prio_array_t;
 struct backing_dev_info;
 struct reclaim_state;
 
@@ -715,6 +714,8 @@ enum sleep_type {
 	SLEEP_INTERRUPTED,
 };
 
+struct prio_array;
+
 struct task_struct {
 	volatile long state;	/* -1 unrunnable, 0 runnable, >0 stopped */
 	struct thread_info *thread_info;
@@ -732,7 +733,7 @@ struct task_struct {
 	int load_weight;	/* for niceness load balancing purposes */
 	int prio, static_prio, normal_prio;
 	struct list_head run_list;
-	prio_array_t *array;
+	struct prio_array *array;
 
 	unsigned short ioprio;
 	unsigned int btrace_seq;