sched: Clean up and harmonize the coding style of the scheduler code base

A good number of small style inconsistencies have accumulated
in the scheduler core, so do a pass over them to harmonize
all these details:

 - fix speling in comments,

 - use curly braces for multi-line statements,

 - remove unnecessary parentheses from integer literals,

 - capitalize consistently,

 - remove stray newlines,

 - add comments where necessary,

 - remove invalid/unnecessary comments,

 - align structure definitions and other data types vertically,

 - add missing newlines for increased readability,

 - fix vertical tabulation where it's misaligned,

 - harmonize preprocessor conditional block labeling
   and vertical alignment,

 - remove line-breaks where they uglify the code,

 - add newline after local variable definitions,

No change in functionality:

  md5:
     1191fa0a890cfa8132156d2959d7e9e2  built-in.o.before.asm
     1191fa0a890cfa8132156d2959d7e9e2  built-in.o.after.asm

Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
diff --git a/kernel/sched/wait.c b/kernel/sched/wait.c
index 929ecb7..7b2a142a 100644
--- a/kernel/sched/wait.c
+++ b/kernel/sched/wait.c
@@ -107,6 +107,7 @@ static int __wake_up_common(struct wait_queue_head *wq_head, unsigned int mode,
 			break;
 		}
 	}
+
 	return nr_exclusive;
 }
 
@@ -317,6 +318,7 @@ int do_wait_intr(wait_queue_head_t *wq, wait_queue_entry_t *wait)
 	spin_unlock(&wq->lock);
 	schedule();
 	spin_lock(&wq->lock);
+
 	return 0;
 }
 EXPORT_SYMBOL(do_wait_intr);
@@ -333,6 +335,7 @@ int do_wait_intr_irq(wait_queue_head_t *wq, wait_queue_entry_t *wait)
 	spin_unlock_irq(&wq->lock);
 	schedule();
 	spin_lock_irq(&wq->lock);
+
 	return 0;
 }
 EXPORT_SYMBOL(do_wait_intr_irq);
@@ -378,6 +381,7 @@ int autoremove_wake_function(struct wait_queue_entry *wq_entry, unsigned mode, i
 
 	if (ret)
 		list_del_init(&wq_entry->entry);
+
 	return ret;
 }
 EXPORT_SYMBOL(autoremove_wake_function);