Bug#11759349 -- Merge of patch from mysql-5.1.

include/heap.h

@@ -51,6 +51,7 @@ typedef struct st_heapinfo		/* Struct from heap_info */
   uint reclength;			/* Length of one record */
   int errkey;
   ulonglong auto_increment;
+  time_t create_time;
 } HEAPINFO;
 
 
@@ -147,6 +148,7 @@ typedef struct st_heap_share
   uint open_count;
   uchar *del_link;			/* Link to next block with del. rec */
   char * name;			/* Name of "memory-file" */
+  time_t create_time;
   THR_LOCK lock;
   mysql_mutex_t intern_lock;            /* Locking for use with _locking */
   my_bool delete_on_close;