tree-wide: Assorted spelling fixes

In particular, several occurances of funny versions of 'success',
'unknown', 'therefore', 'acknowledge', 'argument', 'achieve', 'address',
'beginning', 'desirable', 'separate' and 'necessary' are fixed.

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Cc: Joe Perches <joe@perches.com>
Cc: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/include/linux/sched.h b/include/linux/sched.h
index abdfacc..a70957b 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1533,7 +1533,7 @@
 
 	struct list_head	*scm_work_list;
 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
-	/* Index of current stored adress in ret_stack */
+	/* Index of current stored address in ret_stack */
 	int curr_ret_stack;
 	/* Stack of return addresses for return function tracing */
 	struct ftrace_ret_stack	*ret_stack;