Some trivial changes.

sql/table.cc

@@ -279,7 +279,8 @@ TABLE_CATEGORY get_table_category(const LEX_STRING *db, const LEX_STRING *name)
 
   SYNOPSIS
     alloc_table_share()
-    TABLE_LIST		Take database and table name from there
+    db                  Database name
+    table_name          Table name
     key			Table cache key (db \0 table_name \0...)
     key_length		Length of key
 

sql/table_cache.cc

@@ -741,10 +741,9 @@ void tdc_unlock_share(TDC_element *element)
 
   tdc_acquire_share()
   thd                   Thread handle
-  table_list            Table that should be opened
-  key                   Table cache key
-  key_length            Length of key
+  tl                    Table that should be opened
   flags                 operation: what to open table or view
+  out_table             TABLE for the requested table
 
   IMPLEMENTATION
     Get a table definition from the table definition cache.

sql/table_cache.h

@@ -1,3 +1,5 @@
+#ifndef TABLE_CACHE_H_INCLUDED
+#define TABLE_CACHE_H_INCLUDED
 /* Copyright (c) 2000, 2012, Oracle and/or its affiliates.
    Copyright (c) 2010, 2011 Monty Program Ab
    Copyright (C) 2013 Sergey Vojtovich and MariaDB Foundation
@@ -109,3 +111,4 @@ inline uint tdc_create_key(char *key, const char *db, const char *table_name)
   return (uint) (strmake(strmake(key, db, NAME_LEN) + 1, table_name,
                          NAME_LEN) - key + 1);
 }
+#endif /* TABLE_CACHE_H_INCLUDED */