To get correct values in SHOW TABLE STATUS

Added pseudo column fragment memory
    changed ndb_get_table_statistics to take struct 
    and read row_size and fragment_memory

ndb/include/kernel/AttributeHeader.hpp

@@ -40,6 +40,7 @@ public:
   STATIC_CONST( RANGE_NO     = 0xFFFB ); // Read range no (when batched ranges)
   
   STATIC_CONST( ROW_SIZE     = 0xFFFA );
+  STATIC_CONST( FRAGMENT_MEMORY= 0xFFF9 );
 
   /** Initialize AttributeHeader at location aHeaderPtr */
   static AttributeHeader& init(void* aHeaderPtr, Uint32 anAttributeId,