sched: Rename sched.c as sched/core.c in comments and Documentation

Most of the stuff from kernel/sched.c was moved to kernel/sched/core.c long time
back and the comments/Documentation never got updated.

I figured it out when I was going through sched-domains.txt and so thought of
fixing it globally.

I haven't crossed check if the stuff that is referenced in sched/core.c by all
these files is still present and hasn't changed as that wasn't the motive behind
this patch.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/cdff76a265326ab8d71922a1db5be599f20aad45.1370329560.git.viresh.kumar@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

kernel/cpuset.c

@@ -540,7 +540,7 @@ static void update_domain_attr_tree(struct sched_domain_attr *dattr,
  * This function builds a partial partition of the systems CPUs
  * A 'partial partition' is a set of non-overlapping subsets whose
  * union is a subset of that set.
- * The output of this function needs to be passed to kernel/sched.c
+ * The output of this function needs to be passed to kernel/sched/core.c
  * partition_sched_domains() routine, which will rebuild the scheduler's
  * load balancing domains (sched domains) as specified by that partial
  * partition.
@@ -569,7 +569,7 @@ static void update_domain_attr_tree(struct sched_domain_attr *dattr,
  *	   is a subset of one of these domains, while there are as
  *	   many such domains as possible, each as small as possible.
  * doms  - Conversion of 'csa' to an array of cpumasks, for passing to
- *	   the kernel/sched.c routine partition_sched_domains() in a
+ *	   the kernel/sched/core.c routine partition_sched_domains() in a
  *	   convenient format, that can be easily compared to the prior
  *	   value to determine what partition elements (sched domains)
  *	   were changed (added or removed.)

kernel/time.c

@@ -11,7 +11,7 @@
  * Modification history kernel/time.c
  *
  * 1993-09-02    Philip Gladstone
- *      Created file with time related functions from sched.c and adjtimex()
+ *      Created file with time related functions from sched/core.c and adjtimex()
  * 1993-10-08    Torsten Duwe
  *      adjtime interface update and CMOS clock write code
  * 1995-08-13    Torsten Duwe

kernel/workqueue_internal.h

@@ -64,7 +64,7 @@ static inline struct worker *current_wq_worker(void)
 
 /*
  * Scheduler hooks for concurrency managed workqueue.  Only to be used from
- * sched.c and workqueue.c.
+ * sched/core.c and workqueue.c.
  */
 void wq_worker_waking_up(struct task_struct *task, int cpu);
 struct task_struct *wq_worker_sleeping(struct task_struct *task, int cpu);